BMW DTC P077C – Output Shaft Speed Sensor Circuit Low
DTC P077C meaning on BMW
DTC P077C on a BMW indicates a fault with the Output Shaft Speed Sensor Circuit being detected as low. The Output Shaft Speed Sensor is responsible for monitoring the speed of the output shaft of the transmission. When the sensor circuit is reading a low signal, it suggests a potential issue with the sensor itself or the wiring connected to it.
BMW DTC P077C symptoms
Symptoms of DTC P077C on a BMW may include:
- Check Engine Light illuminated on the dashboard
- Transmission shifting irregularly or harshly
- Loss of power or acceleration
- Transmission slipping
BMW DTC P077C causes
Common causes of DTC P077C on a BMW include:
- Defective Output Shaft Speed Sensor
- Faulty wiring or connectors in the sensor circuit
- Corrosion or poor connections in the sensor circuit
BMW DTC P077C seriousness
DTC P077C should be addressed promptly as it can lead to drivability issues and potential damage to the transmission if left unresolved. Ignoring this fault may result in further complications and costly repairs.
How to diagnose DTC P077C on BMW
To diagnose DTC P077C on a BMW, follow these steps:
- Use a diagnostic scanner to retrieve the fault code and related data
- Inspect the Output Shaft Speed Sensor and its wiring for any visible damage or corrosion
- Test the sensor’s resistance and voltage output to determine if it is functioning correctly
- Check for any loose or damaged connections in the sensor circuit
How to fix DTC P077C on BMW
To fix DTC P077C on a BMW, consider the following:
- Replace the Output Shaft Speed Sensor if it is found to be faulty
- Repair or replace any damaged wiring or connectors in the sensor circuit
- Clean any corrosion from the connections and ensure they are secure
How to erase DTC P077C on BMW
To erase DTC P077C on a BMW, you can:
- Use a diagnostic scanner to clear the fault code after the repair has been completed
- Drive the vehicle to allow the system to recheck and confirm the issue has been resolved