An input/turbine speed sensor / turbine speed sensor / TSS is used to read the rotational speed of the input shaft inside the transmission, which helps the ECU to determine when to execute a shift. A P2765 DTC indicates a problem with this sensor.
How Serious is the Code?
There are a number of transmission problems associated with a P2765 diagnostic trouble code, including erratic shifts, failed shifts and engine stalling.
Symptoms of a P2765 include:
- Erratic or hard shifts
- Failure to shift
- Decreased fuel economy
- Speedometer/odometer failure or fluctuation
- Engine stalling
- Limp Mode
- Failed TSS sensor
- Damaged turbine speed sensor wiring
- Faulty connectors
- Failed solenoid
- Valve body issues
- Dirty transmission fluid
How to Diagnose the Code?
When trying to diagnose a P2765 OBDII trouble code, one of the first things that should be done is to check the condition of the transmission fluid. The wiring and connectors will also need to be checked, along with the manufacturer’s TSB database. If everything looks good and there’s no metal fragments on the input speed sensor head, the sensor itself will have to be tested, along with possibly the output speed sensor and intermediate shaft speed sensor.
What Repairs Will Fix P2765?
- Repair or replace the input speed sensor
- Repair or replace damaged wiring
- Repair or replace damaged wiring connectors
- Reprogram ECU/TCM
- P0716 – Input/Turbine Speed Sensor Circuit Range/Performance
- P0717 – Input/Turbine Speed Sensor Circuit No Signal
- P0718 – Input/Turbine Speed Sensor Circuit Intermittent
- P0720 – Output Speed Sensor Circuit Malfunction
- P0721 – Output Speed Sensor Range/Performance
- P0722 – Output Speed Sensor No Signal
- P0723 – Output Speed Sensor Intermittent
- P2766 – Input/Turbine Speed Sensor B Circuit Range/Performance
- P2767 – Input/Turbine Speed Sensor B Circuit No Signal
- P2768 – Input/Turbine Speed Sensor B Circuit Intermittent