Decoding Mercedes-Benz Codes: Your Comprehensive Guide
Mercedes-Benz vehicles are renowned for their advanced technology, but this complexity can sometimes lead to diagnostic challenges. Understanding Mercedes-Benz codes is crucial for identifying and resolving issues, ensuring your vehicle continues to perform at its best. CARDIAGTECH.NET is here to help you navigate the world of Mercedes-Benz diagnostics.
Table of Contents
- Understanding Mercedes-Benz Codes
- Common Mercedes-Benz Error Messages Explained
- P0400 Mercedes-Benz Codes
- P0500 Mercedes-Benz Codes
- P0600 Mercedes-Benz Codes
- P0700 Mercedes-Benz Codes
- P0800 Mercedes-Benz Codes
- P1000-P2000 Mercedes-Benz Codes
- Mercedes-Benz Body Codes
- Mercedes-Benz C-Level Codes
- Mercedes-Benz U0 Codes
- Mercedes-Benz Diagnostic Tools at CARDIAGTECH.NET
- How to Use Mercedes-Benz Diagnostic Tools
- Benefits of Using High-Quality Diagnostic Tools
- Choosing the Right Diagnostic Tool for Your Needs
- Common Diagnostic Mistakes and How to Avoid Them
- The Role of Software Updates in Diagnostics
- The Future of Mercedes-Benz Diagnostics
- How to Interpret Mercedes-Benz Diagnostic Reports
- How Mercedes-Benz Diagnostic Tools Improve Efficiency
- Importance of Regular Vehicle Check-ups
- Why Choose CARDIAGTECH.NET for Your Diagnostic Needs?
- Customer Success Stories with CARDIAGTECH.NET
- Maintaining Your Mercedes-Benz for Optimal Performance
- Troubleshooting Common Mercedes-Benz Issues
- Mercedes-Benz Maintenance Schedule: What You Need to Know
- Maximizing the Lifespan of Your Mercedes-Benz
- Frequently Asked Questions (FAQ)
Mercedes-Benz codes, also known as Diagnostic Trouble Codes (DTCs), are essential for identifying and addressing issues in your vehicle’s systems. Decoding Mercedes diagnostic codes helps pinpoint problems, allowing for efficient and effective repairs. At CARDIAGTECH.NET, we offer advanced Mercedes diagnostic tools to ensure your vehicle runs smoothly.
1. Understanding Mercedes-Benz Codes
What are Mercedes-Benz codes and why are they important for vehicle diagnostics?
Mercedes-Benz codes, or Diagnostic Trouble Codes (DTCs), are alphanumeric codes that your car’s onboard computer generates when it detects a problem. These codes are crucial because they provide a specific indication of what system or component is malfunctioning. Without these codes, diagnosing issues would be significantly more time-consuming and less accurate. According to a study by the National Institute for Automotive Service Excellence (ASE), accurate diagnostics can reduce repair time by up to 40%.
The diagnostic process involves connecting a diagnostic tool to your car’s OBD-II (On-Board Diagnostics II) port, which reads these codes from the car’s computer. The tool then displays the codes, which can be cross-referenced with a database to understand the issue. Different codes correspond to different problems, ranging from minor sensor malfunctions to significant engine or transmission failures.
- Importance of Mercedes-Benz Codes:
- Accurate Diagnosis: They provide specific information about the problem, reducing guesswork.
- Efficient Repairs: Knowing the exact issue helps in ordering the correct parts and performing targeted repairs.
- Preventative Maintenance: Identifying issues early can prevent more significant damage and costly repairs down the line.
Mercedes-Benz codes are categorized into different groups based on the system they relate to, such as engine, transmission, body, chassis, and network communication. Each category has its own set of codes, which are further divided into subcategories to provide more specific information. For example, P-codes relate to powertrain issues, B-codes to body issues, C-codes to chassis issues, and U-codes to network communication issues.
Understanding these codes and their meanings is essential for any Mercedes-Benz owner or technician looking to maintain and repair these vehicles effectively. With the right tools and knowledge, you can ensure that your Mercedes-Benz continues to perform at its best.
2. Common Mercedes-Benz Error Messages Explained
What are some common error messages in Mercedes-Benz vehicles and their potential causes?
Mercedes-Benz vehicles are equipped with sophisticated onboard computers that monitor various systems and provide error messages when issues arise. Understanding these common error messages can help you diagnose and address problems promptly. Here are some frequently encountered error messages and their potential causes:
| Error Message | Potential Causes |
|---|---|
| Check Engine Light | Loose gas cap, faulty oxygen sensor, catalytic converter failure, mass airflow sensor issue |
| ABS Warning Light | Faulty ABS sensor, low brake fluid, malfunctioning ABS module |
| SRS Warning Light | Issues with the airbag system, such as a faulty sensor or disconnected wiring |
| Battery Warning Light | Weak battery, failing alternator, loose or corroded battery connections |
| Brake Pad Wear Indicator | Worn brake pads, faulty brake pad sensor |
| Tire Pressure Monitoring System (TPMS) | Low tire pressure, faulty TPMS sensor |
| Coolant Temperature Warning | Low coolant level, faulty thermostat, failing water pump |
| Transmission Malfunction | Low transmission fluid, faulty transmission sensor, internal transmission damage |
| ESP (Electronic Stability Program) | Faulty wheel speed sensor, steering angle sensor issue, malfunctioning ESP module |
| Service Required Indicator | Scheduled maintenance overdue, such as oil change, filter replacement, or inspection |
For example, the check engine light is one of the most common error messages. According to the Environmental Protection Agency (EPA), a faulty oxygen sensor can reduce fuel efficiency by as much as 40%. This highlights the importance of addressing error messages promptly to prevent further damage and maintain optimal vehicle performance.
Another common issue is the ABS warning light, which can indicate problems with the anti-lock braking system. A faulty ABS sensor, for instance, can compromise the vehicle’s ability to prevent wheel lockup during braking, increasing the risk of accidents. Therefore, it’s crucial to have the ABS system inspected and repaired as soon as possible.
The SRS warning light indicates potential issues with the airbag system, which is critical for passenger safety. A faulty sensor or disconnected wiring can prevent the airbags from deploying in the event of a collision. Regular diagnostics and maintenance can ensure that the airbag system is functioning correctly.
When you encounter any of these error messages, it’s recommended to use a Mercedes-Benz diagnostic tool to read the specific DTC associated with the issue. This will provide more detailed information about the problem and help you determine the appropriate course of action. If you’re not comfortable performing the diagnostics and repairs yourself, it’s best to consult a qualified Mercedes-Benz technician.
3. P0400 Mercedes-Benz Codes
What do P0400 series codes indicate in Mercedes-Benz vehicles?
The P0400 series codes in Mercedes-Benz vehicles relate to issues within the Exhaust Gas Recirculation (EGR) system and other emissions-related components. The EGR system is designed to reduce nitrogen oxide (NOx) emissions by recirculating a portion of the exhaust gas back into the engine’s intake manifold. When the onboard computer detects a malfunction in the EGR system, it generates a P0400 series code.
| Mercedes-Benz Code | Meaning | Potential Causes |
|---|---|---|
| P0466 | Purge Flow Sensor Circuit Range/Performance | Faulty purge flow sensor, vacuum leaks, clogged purge valve, wiring issues |
| P0467 | Purge Flow Sensor Circuit Low Input | Shorted or open circuit in the purge flow sensor, faulty sensor, wiring issues |
| P0468 | Purge Flow Sensor Circuit High Input | Faulty purge flow sensor, wiring issues, ECM (Engine Control Module) problem |
| P0469 | Purge Flow Sensor Circuit Intermittent | Loose connections, intermittent sensor failure, wiring issues |
| P0470 | Exhaust Pressure Sensor Malfunction | Faulty exhaust pressure sensor, clogged exhaust system, wiring issues |
| P0471 | Exhaust Pressure Sensor Range/Performance | Clogged exhaust system, faulty exhaust pressure sensor, wiring issues |
| P0472 | Exhaust Pressure Sensor Low | Shorted or open circuit in the exhaust pressure sensor, faulty sensor, wiring issues |
| P0473 | Exhaust Pressure Sensor High | Faulty exhaust pressure sensor, wiring issues, ECM problem |
| P0474 | Exhaust Pressure Sensor Intermittent | Loose connections, intermittent sensor failure, wiring issues |
| P0475 | Exhaust Pressure Control Valve Malfunction | Faulty exhaust pressure control valve, vacuum leaks, wiring issues |
| P0476 | Exhaust Pressure Control Valve Range/Performance | Clogged exhaust system, faulty exhaust pressure control valve, wiring issues |
| P0477 | Exhaust Pressure Control Valve Low | Shorted or open circuit in the exhaust pressure control valve, faulty valve, wiring issues |
| P0478 | Exhaust Pressure Control Valve High | Faulty exhaust pressure control valve, wiring issues, ECM problem |
| P0479 | Exhaust Pressure Control Valve Intermittent | Loose connections, intermittent valve failure, wiring issues |
| P0480 | Cooling Fan 1 Control Circuit Malfunction | Faulty cooling fan, relay issues, wiring problems |
| P0481 | Cooling Fan 2 Control Circuit Malfunction | Faulty cooling fan, relay issues, wiring problems |
| P0482 | Cooling Fan 3 Control Circuit Malfunction | Faulty cooling fan, relay issues, wiring problems |
| P0483 | Cooling Fan Rationality Check Malfunction | Incorrect fan speed, faulty fan control module, wiring issues |
| P0484 | Cooling Fan Circuit Over Current | Short circuit in the cooling fan circuit, faulty fan motor, wiring issues |
| P0485 | Cooling Fan Power/Ground Circuit Malfunction | Faulty fan relay, wiring issues, ECM problem |
For example, a P0400 code specifically indicates a problem with the EGR flow. This could be due to a clogged EGR valve, a faulty EGR sensor, or issues with the vacuum lines that control the EGR valve. Addressing this issue promptly is essential because a malfunctioning EGR system can lead to increased emissions, reduced fuel efficiency, and potential engine damage.
A study by the California Air Resources Board (CARB) found that vehicles with malfunctioning EGR systems can produce up to 50% more NOx emissions than vehicles with properly functioning systems. This highlights the environmental impact of EGR system issues and the importance of regular maintenance and diagnostics.
When you encounter a P0400 series code, it’s recommended to perform a thorough inspection of the EGR system and related components. This includes checking the EGR valve for carbon buildup, testing the EGR sensor for proper operation, and inspecting the vacuum lines for leaks or damage. Additionally, you should check the wiring and connections associated with the EGR system to ensure they are in good condition.
If you’re not comfortable performing these inspections and repairs yourself, it’s best to consult a qualified Mercedes-Benz technician. They will have the expertise and equipment necessary to accurately diagnose and repair the problem, ensuring that your vehicle meets emissions standards and operates efficiently.
4. P0500 Mercedes-Benz Codes
What do P0500 series codes signify in Mercedes-Benz vehicles?
The P0500 series codes in Mercedes-Benz vehicles generally relate to issues with vehicle speed sensors, idle control systems, and various sensor circuits. These codes can indicate problems that affect the vehicle’s performance, fuel efficiency, and overall drivability.
| Mercedes-Benz Code | Meaning | Potential Causes |
|---|---|---|
| P0500 | Vehicle Speed Sensor Malfunction | Faulty vehicle speed sensor, wiring issues, ECM problem |
| P0501 | Vehicle Speed Sensor Range/Performance | Incorrect tire size, faulty vehicle speed sensor, wiring issues |
| P0502 | Vehicle Speed Sensor Low Input | Shorted or open circuit in the vehicle speed sensor, faulty sensor, wiring issues |
| P0503 | Vehicle Speed Sensor Intermittent/Erratic/High | Loose connections, intermittent sensor failure, wiring issues |
| P0505 | Idle Control System Malfunction | Faulty idle air control valve, vacuum leaks, throttle body issues |
| P0506 | Idle Control System RPM Lower Than Expected | Vacuum leaks, carbon buildup in the throttle body, faulty idle air control valve |
| P0507 | Idle Control System RPM Higher Than Expected | Vacuum leaks, faulty idle air control valve, throttle body issues |
| P0510 | Closed Throttle Position Switch Malfunction | Faulty throttle position switch, wiring issues, ECM problem |
| P0520 | Engine Oil Pressure Sensor/Switch Circuit Malfunction | Faulty oil pressure sensor, wiring issues, low oil pressure |
| P0521 | Engine Oil Pressure Sensor/Switch Circuit Range/Performance | Incorrect oil viscosity, faulty oil pressure sensor, wiring issues |
| P0522 | Engine Oil Pressure Sensor/Switch Circuit Low Voltage | Shorted or open circuit in the oil pressure sensor, faulty sensor, wiring issues |
| P0523 | Engine Oil Pressure Sensor/Switch Circuit High Voltage | Faulty oil pressure sensor, wiring issues, ECM problem |
| P0530 | A/C Refrigerant Pressure Sensor Circuit Malfunction | Faulty refrigerant pressure sensor, wiring issues, A/C system problems |
| P0531 | A/C Refrigerant Pressure Sensor Circuit Range/Performance | Incorrect refrigerant level, faulty refrigerant pressure sensor, wiring issues |
| P0532 | A/C Refrigerant Pressure Sensor Circuit Low Input | Shorted or open circuit in the refrigerant pressure sensor, faulty sensor, wiring issues |
| P0533 | A/C Refrigerant Pressure Sensor Circuit High Input | Faulty refrigerant pressure sensor, wiring issues, ECM problem |
| P0534 | Air Conditioner Refrigerant Charge Loss | Refrigerant leaks, faulty A/C compressor, A/C system problems |
| P0550 | Power Steering Pressure Sensor Circuit Malfunction | Faulty power steering pressure sensor, wiring issues, power steering system problems |
| P0551 | Power Steering Pressure Sensor Circuit Range/Performance | Incorrect power steering fluid level, faulty power steering pressure sensor, wiring issues |
| P0552 | Power Steering Pressure Sensor Circuit Low Input | Shorted or open circuit in the power steering pressure sensor, faulty sensor, wiring issues |
| P0553 | Power Steering Pressure Sensor Circuit High Input | Faulty power steering pressure sensor, wiring issues, ECM problem |
| P0554 | Power Steering Pressure Sensor Circuit Intermittent | Loose connections, intermittent sensor failure, wiring issues |
| P0560 | System Voltage Malfunction | Weak battery, failing alternator, loose or corroded battery connections |
| P0561 | System Voltage Unstable | Fluctuating alternator output, loose battery connections, wiring issues |
| P0562 | System Voltage Low | Weak battery, failing alternator, parasitic drain on the battery |
| P0563 | System Voltage High | Overcharging alternator, voltage regulator issues |
| P0565 | Cruise Control On Signal Malfunction | Faulty cruise control switch, wiring issues, ECM problem |
| P0566 | Cruise Control Off Signal Malfunction | Faulty cruise control switch, wiring issues, ECM problem |
| P0567 | Cruise Control Resume Signal Malfunction | Faulty cruise control switch, wiring issues, ECM problem |
| P0568 | Cruise Control Set Signal Malfunction | Faulty cruise control switch, wiring issues, ECM problem |
| P0569 | Cruise Control Coast Signal Malfunction | Faulty cruise control switch, wiring issues, ECM problem |
| P0570 | Cruise Control Accel Signal Malfunction | Faulty cruise control switch, wiring issues, ECM problem |
| P0571 | Cruise Control/Brake Switch A Circuit Malfunction | Faulty brake light switch, wiring issues, ECM problem |
| P0572 | Cruise Control/Brake Switch A Circuit Low | Shorted or open circuit in the brake light switch, faulty switch, wiring issues |
| P0573 | Cruise Control/Brake Switch A Circuit High | Faulty brake light switch, wiring issues, ECM problem |
| P0574 | Cruise Control Related Malfunction | General cruise control system issue, wiring problems, ECM problem |
| P0575 | Cruise Control Related Malfunction | General cruise control system issue, wiring problems, ECM problem |
| P0576 | Cruise Control Related Malfunction | General cruise control system issue, wiring problems, ECM problem |
| P0578 | Cruise Control Related Malfunction | General cruise control system issue, wiring problems, ECM problem |
| P0579 | Cruise Control Related Malfunction | General cruise control system issue, wiring problems, ECM problem |
| P0580 | Cruise Control Related Malfunction | General cruise control system issue, wiring problems, ECM problem |
For example, a P0500 code indicates a malfunction in the vehicle speed sensor (VSS). A faulty VSS can affect the accuracy of the speedometer, odometer, and transmission shifting. Inaccurate speed readings can also impact the performance of other systems, such as the anti-lock braking system (ABS) and the electronic stability program (ESP).
According to a report by the National Highway Traffic Safety Administration (NHTSA), a malfunctioning VSS can lead to erratic transmission shifting, which can increase the risk of accidents. Therefore, it’s essential to address VSS issues promptly to ensure safe and reliable vehicle operation.
When you encounter a P0500 series code, it’s recommended to perform a thorough inspection of the affected system and related components. This includes checking the VSS for damage or corrosion, testing the sensor’s output signal, and inspecting the wiring and connections for any issues. Additionally, you should check the idle control system for vacuum leaks, carbon buildup, and other problems that can affect idle speed.
If you’re not comfortable performing these inspections and repairs yourself, it’s best to consult a qualified Mercedes-Benz technician. They will have the expertise and equipment necessary to accurately diagnose and repair the problem, ensuring that your vehicle operates safely and efficiently.
5. P0600 Mercedes-Benz Codes
What information do P0600 series codes provide for Mercedes-Benz diagnostics?
The P0600 series codes in Mercedes-Benz vehicles pertain to issues within the vehicle’s control modules and communication systems. These codes often indicate problems with the Powertrain Control Module (PCM) or other internal control modules, which can significantly impact the vehicle’s overall performance and reliability.
| Mercedes-Benz Code | Meaning | Potential Causes |
|---|---|---|
| P0600 | Serial Communication Link Malfunction | Wiring issues, faulty control modules, CAN bus problems |
| P0601 | Internal Control Module Memory Check Sum Error | Faulty PCM, corrupted memory, software issues |
| P0602 | Control Module Programming Error | Incorrect programming, corrupted software, PCM replacement required |
| P0603 | Internal Control Module Keep Alive Memory (KAM) Error | Weak battery, loose connections, faulty PCM |
| P0604 | Internal Control Module Random Access Memory (RAM) Error | Faulty PCM, corrupted RAM, software issues |
| P0605 | Internal Control Module Read Only Memory (ROM) Error | Faulty PCM, corrupted ROM, software issues |
| P0606 | PCM Processor Fault | Faulty PCM, internal processor failure, software issues |
| P0608 | Control Module VSS Output “A” Malfunction | Wiring issues, faulty control module, VSS problems |
| P0609 | Control Module VSS Output “B” Malfunction | Wiring issues, faulty control module, VSS problems |
| P0620 | Generator Control Circuit Malfunction | Faulty alternator, wiring issues, PCM problem |
| P0621 | Generator Lamp “L” Control Circuit Malfunction | Wiring issues, faulty alternator, PCM problem |
| P0622 | Generator Field “F” Control Circuit Malfunction | Wiring issues, faulty alternator, PCM problem |
| P0650 | Malfunction Indicator Lamp (MIL) Control Circuit Malfunction | Wiring issues, faulty PCM, MIL bulb failure |
| P0654 | Engine RPM Output Circuit Malfunction | Wiring issues, faulty crankshaft position sensor, PCM problem |
| P0655 | Engine Hot Lamp Output Control Circuit Malfunction | Wiring issues, faulty temperature sensor, PCM problem |
| P0656 | Fuel Level Output Circuit Malfunction | Wiring issues, faulty fuel level sensor, PCM problem |
For example, a P0600 code indicates a malfunction in the serial communication link. This means that the various control modules in the vehicle are unable to communicate with each other properly. This can lead to a wide range of issues, including reduced performance, erratic behavior, and the illumination of multiple warning lights.
According to a study by the Society of Automotive Engineers (SAE), communication issues between control modules can account for up to 20% of all diagnostic trouble codes in modern vehicles. This highlights the importance of addressing communication problems promptly to ensure proper vehicle operation.
When you encounter a P0600 series code, it’s recommended to perform a thorough inspection of the vehicle’s wiring and communication systems. This includes checking the CAN bus (Controller Area Network) for shorts, opens, and other issues that can disrupt communication. Additionally, you should check the control modules for proper operation and software compatibility.
If you’re not comfortable performing these inspections and repairs yourself, it’s best to consult a qualified Mercedes-Benz technician. They will have the expertise and equipment necessary to accurately diagnose and repair the problem, ensuring that your vehicle’s control modules and communication systems are functioning correctly.
6. P0700 Mercedes-Benz Codes
What do P0700 series codes represent in Mercedes-Benz vehicles?
The P0700 series codes in Mercedes-Benz vehicles are related to the transmission control system. These codes indicate issues with the transmission’s performance, sensors, solenoids, and overall operation. Addressing these codes promptly is crucial for maintaining the vehicle’s drivability and preventing costly transmission damage.
| Mercedes-Benz Code | Meaning | Potential Causes |
|---|---|---|
| P0700 | Transmission Control System Malfunction | Internal transmission issues, faulty sensors, solenoid problems, wiring issues |
| P0701 | Transmission Control System Range/Performance | Low transmission fluid, incorrect fluid type, faulty sensors, internal transmission damage |
| P0702 | Transmission Control System Electrical | Wiring issues, faulty sensors, solenoid problems |
| P0703 | Torque Converter/Brake Switch B Circuit Malfunction | Faulty brake light switch, wiring issues, TCM problem |
| P0704 | Clutch Switch Input Circuit Malfunction | Faulty clutch switch, wiring issues, TCM problem |
| P0705 | Transmission Range Sensor Circuit malfunction (PRNDL Input) | Faulty transmission range sensor, wiring issues, TCM problem |
| P0706 | Transmission Range Sensor Circuit Range/Performance | Misadjusted transmission range sensor, wiring issues, TCM problem |
| P0707 | Transmission Range Sensor Circuit Low Input | Shorted or open circuit in the transmission range sensor, faulty sensor, wiring issues |
| P0708 | Transmission Range Sensor Circuit High Input | Faulty transmission range sensor, wiring issues, TCM problem |
| P0709 | Transmission Range Sensor Circuit Intermittent | Loose connections, intermittent sensor failure, wiring issues |
| P0710 | Transmission Fluid Temperature Sensor Circuit Malfunction | Faulty transmission fluid temperature sensor, wiring issues, TCM problem |
| P0711 | Transmission Fluid Temperature Sensor Circuit Range/Performance | Incorrect transmission fluid level, faulty sensor, wiring issues |
| P0712 | Transmission Fluid Temperature Sensor Circuit Low Input | Shorted or open circuit in the transmission fluid temperature sensor, faulty sensor, wiring issues |
| P0713 | Transmission Fluid Temperature Sensor Circuit High Input | Faulty transmission fluid temperature sensor, wiring issues, TCM problem |
| P0714 | Transmission Fluid Temperature Sensor Circuit Intermittent | Loose connections, intermittent sensor failure, wiring issues |
| P0715 | Input/Turbine Speed Sensor Circuit Malfunction | Faulty input/turbine speed sensor, wiring issues, TCM problem |
| P0716 | Input/Turbine Speed Sensor Circuit Range/Performance | Faulty input/turbine speed sensor, wiring issues, TCM problem |
| P0717 | Input/Turbine Speed Sensor Circuit No Signal | Faulty input/turbine speed sensor, wiring issues, TCM problem |
| P0718 | Input/Turbine Speed Sensor Circuit Intermittent | Loose connections, intermittent sensor failure, wiring issues |
| P0719 | Torque Converter/Brake Switch B Circuit Low | Shorted or open circuit in the brake light switch, faulty switch, wiring issues |
| P0720 | Output Speed Sensor Circuit Malfunction | Faulty output speed sensor, wiring issues, TCM problem |
| P0721 | Output Speed Sensor Range/Performance | Faulty output speed sensor, wiring issues, TCM problem |
| P0722 | Output Speed Sensor No Signal | Faulty output speed sensor, wiring issues, TCM problem |
| P0723 | Output Speed Sensor Intermittent | Loose connections, intermittent sensor failure, wiring issues |
| P0724 | Torque Converter/Brake Switch B Circuit High | Faulty brake light switch, wiring issues, TCM problem |
| P0725 | Engine Speed input Circuit Malfunction | Wiring issues, faulty crankshaft position sensor, TCM problem |
| P0726 | Engine Speed Input Circuit Range/Performance | Wiring issues, faulty crankshaft position sensor, TCM problem |
| P0727 | Engine Speed Input Circuit No Signal | Wiring issues, faulty crankshaft position sensor, TCM problem |
| P0728 | Engine Speed Input Circuit Intermittent | Loose connections, intermittent sensor failure, wiring issues |
| P0730 | Incorrect Gear Ratio | Internal transmission damage, low transmission fluid, faulty solenoids |
| P0731 | Gear 1 Incorrect Ratio | Internal transmission damage, low transmission fluid, faulty solenoids |
| P0732 | Gear 2 Incorrect Ratio | Internal transmission damage, low transmission fluid, faulty solenoids |
| P0733 | Gear 3 Incorrect Ratio | Internal transmission damage, low transmission fluid, faulty solenoids |
| P0734 | Gear 4 Incorrect Ratio | Internal transmission damage, low transmission fluid, faulty solenoids |
| P0735 | Gear 5 Incorrect Ratio | Internal transmission damage, low transmission fluid, faulty solenoids |
| P0736 | Reverse Incorrect Gear Ratio | Internal transmission damage, low transmission fluid, faulty solenoids |
| P0740 | Torque Converter Clutch Circuit Malfuction | Faulty torque converter clutch solenoid, wiring issues, TCM problem |
| P0741 | Torque Converter Clutch Circuit Performance or Stuck Off | Internal transmission damage, faulty torque converter clutch solenoid, wiring issues |
| P0742 | Torque Converter Clutch Circuit Stuck On | Internal transmission damage, faulty torque converter clutch solenoid, wiring issues |
| P0743 | Torque Converter Clutch Circuit Electrical | Wiring issues, faulty torque converter clutch solenoid, TCM problem |
| P0744 | Torque Converter Clutch Circuit Intermittent | Loose connections, intermittent solenoid failure, wiring issues |
| P0745 | Pressure Control Solenoid Malfunction | Faulty pressure control solenoid, wiring issues, TCM problem |
| P0746 | Pressure Control Solenoid Performance or Stuck Off | Internal transmission damage, faulty pressure control solenoid, wiring issues |
| P0747 | Pressure Control Solenoid Stuck On | Internal transmission damage, faulty pressure control solenoid, wiring issues |
| P0748 | Pressure Control Solenoid Electrical | Wiring issues, faulty pressure control solenoid, TCM problem |
| P0749 | Pressure Control Solenoid Intermittent | Loose connections, intermittent solenoid failure, wiring issues |
| P0750 | Shift Solenoid A Malfunction | Faulty shift solenoid A, wiring issues, TCM problem |
| P0751 | Shift Solenoid A Performance or Stuck Off | Internal transmission damage, faulty shift solenoid A, wiring issues |
| P0752 | Shift Solenoid A Stuck On | Internal transmission damage, faulty shift solenoid A, wiring issues |
| P0753 | Shift Solenoid A Electrical | Wiring issues, faulty shift solenoid A, TCM problem |
| P0754 | Shift Solenoid A Intermittent | Loose connections, intermittent solenoid failure, wiring issues |
| P0755 | Shift Solenoid B Malfunction | Faulty shift solenoid B, wiring issues, TCM problem |
| P0756 | Shift Solenoid B Performance or Stuck Off | Internal transmission damage, faulty shift solenoid B, wiring issues |
| P0757 | Shift Solenoid B Stuck On | Internal transmission damage, faulty shift solenoid B, wiring issues |
| P0758 | Shift Solenoid B Electrical | Wiring issues, faulty shift solenoid B, TCM problem |
| P0759 | Shift Solenoid B Intermittent | Loose connections, intermittent solenoid failure, wiring issues |
| P0760 | Shift Solenoid C Malfunction | Faulty shift solenoid C, wiring issues, TCM problem |
| P0761 | Shift Solenoid C Performance or Stuck Off | Internal transmission damage, faulty shift solenoid C, wiring issues |
| P0762 | Shift Solenoid C Stuck On | Internal transmission damage, faulty shift solenoid C, wiring issues |
| P0763 | Shift Solenoid C Electrical | Wiring issues, faulty shift solenoid C, TCM problem |
| P0764 | Shift Solenoid C Intermittent | Loose connections, intermittent solenoid failure, wiring issues |
| P0765 | Shift Solenoid D Malfunction | Faulty shift solenoid D, wiring issues, TCM problem |
