Transmission Codes

Transmission Control System Malfunction

General fault in the transmission control system. This is usually accompanied by other transmission-specific codes.

Gear 3 Incorrect Ratio

Third gear ratio is incorrect.

Gear 4 Incorrect Ratio

Fourth gear ratio is incorrect — common on highway driving.

Shift Solenoid A Malfunction

Shift solenoid A has failed or its circuit has a fault. Shift solenoids control hydraulic fluid flow to engage transmission gears.

Shift Solenoid C Malfunction

Shift solenoid C failure or circuit fault.

Shift Solenoid D Malfunction

Shift solenoid D failure.

Shift Solenoid E Malfunction

Shift solenoid E fault. Some transmissions use up to 5 shift solenoids for complex gear selection.

Torque Converter Clutch Circuit Malfunction

The torque converter clutch (TCC) circuit has a fault. The TCC locks the torque converter at highway speeds for better fuel economy.

Torque Converter Clutch Stuck On

The TCC is locked when it should not be. This causes stalling when coming to a stop.

Transmission Over Temperature Condition

Transmission fluid temperature has exceeded safe limits. Overheating causes accelerated wear and eventual transmission failure.

Incorrect Gear Ratio

The transmission is not achieving the expected gear ratio.

Input/Turbine Speed Sensor Circuit Malfunction

The input shaft speed sensor has a circuit fault.

Output Speed Sensor Circuit Malfunction

The output shaft speed sensor has a circuit fault.

Gear 1 Incorrect Ratio

First gear is not achieving the correct ratio.

Gear 2 Incorrect Ratio

Second gear is not achieving the correct ratio.

Torque Converter Clutch Performance/Stuck Off

The TCC is not engaging when commanded. The ECU commands lockup but the converter is not locking.

Shift Solenoid B Malfunction

Shift solenoid B has failed. Controls different gear combinations than solenoid A.

Brake Switch B Circuit Malfunction

A secondary brake switch circuit, used by the transmission control system to detect brake pedal application, has a fault.

Park/Neutral Switch Input Circuit Malfunction

The park/neutral position switch circuit, which prevents starting in gear, has a fault.

Shift Solenoid A Performance or Stuck Off

Shift solenoid A is not performing correctly or is stuck in the off position.

Shift Solenoid A Stuck On

Shift solenoid A is stuck in the on position.

Shift Solenoid A Electrical

An electrical fault has been detected in the shift solenoid A circuit.

Shift Solenoid B Performance or Stuck Off

Shift solenoid B is not performing correctly or is stuck in the off position.

Shift Solenoid B Stuck On

Shift solenoid B is stuck in the on position.

Shift Solenoid B Electrical

An electrical fault has been detected in the shift solenoid B circuit.

Shift Malfunction

A general shift malfunction has been detected within the transmission.

Invalid Data Received From TCM

Another module on the network has received invalid or corrupted data from the transmission control module.

Transmission Range Sensor Circuit Malfunction

The ECM has detected an implausible or erratic signal from the Transmission Range (TR) sensor, which tells the ECM/TCM which gear (Park, Reverse, Neutral, Drive) the shifter is in.

Transmission Fluid Temperature Sensor Circuit

Fault in the transmission fluid temperature sensor circuit. The TCM uses this sensor to adjust shift strategy based on fluid temperature.

Transmission Fluid Temperature Sensor Range/Performance

The transmission temperature sensor reading is outside expected range.

Transmission Fluid Temperature Sensor Circuit Low

Transmission temperature sensor reading is at minimum, indicating sensor or circuit fault.

Transmission Fluid Temperature Sensor Circuit High

Transmission temperature sensor at maximum reading.

Transmission Control System Range/Performance

The transmission control system's overall performance is outside the expected range.

Transmission Control System Electrical

A general electrical fault has been detected within the transmission control system.

Transmission Range Sensor Circuit Range/Performance

The transmission range sensor (PRNDL) reading is outside the expected range.

Transmission Range Sensor Circuit Low Input

The transmission range sensor circuit is reading a lower voltage than expected.

Transmission Range Sensor Circuit High Input

The transmission range sensor circuit is reading a higher voltage than expected.

Input/Turbine Speed Sensor Circuit Range/Performance

The transmission input/turbine speed sensor reading is outside the expected range.

Input/Turbine Speed Sensor Circuit No Signal

The transmission input/turbine speed sensor is providing no signal at all.

Output Speed Sensor Circuit Range/Performance

The transmission output speed sensor reading is outside the expected range.

Output Speed Sensor Circuit No Signal

The transmission output speed sensor is providing no signal at all.

Engine Speed Input Circuit Malfunction

The engine speed signal input to the transmission control module has a fault.

Gear 5 Incorrect Ratio

The transmission is not achieving the correct gear ratio in 5th gear.

Reverse Incorrect Ratio

The transmission is not achieving the correct gear ratio in Reverse.

Torque Converter Clutch Circuit Electrical

A general electrical fault has been detected in the torque converter clutch (TCC) circuit.