BMW DTC P2798 – Electric/Auxiliary Transmission Fluid Pump Control Circuit Low
DTC P2798 meaning on BMW
DTC P2798 on a BMW indicates a low voltage condition in the control circuit of the electric or auxiliary transmission fluid pump. This fault code is specific to the transmission system and is usually triggered when the power supply to the transmission fluid pump falls below the specified threshold.
BMW DTC P2798 symptoms
Symptoms of DTC P2798 on a BMW may include:
- Transmission shifting issues
- Transmission overheating
- Reduced fuel efficiency
- Illuminated transmission warning light
BMW DTC P2798 causes
The common causes of DTC P2798 on a BMW include:
- Defective electric or auxiliary transmission fluid pump
- Corroded or damaged wiring in the pump control circuit
- Loose or poor electrical connections
- Faulty transmission control module (TCM)
BMW DTC P2798 seriousness
DTC P2798 should be addressed promptly as it can lead to potential transmission damage and drivability issues. Ignoring this fault code may result in further transmission problems and could compromise the overall performance and safety of the vehicle.
How to diagnose DTC P2798 on BMW
To diagnose DTC P2798 on a BMW, a mechanic should perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the electric or auxiliary transmission fluid pump for any visible damage
- Check the wiring and connectors in the pump control circuit for corrosion or disconnection
- Test the voltage supply to the pump using a multimeter
- Scan the TCM for any related fault codes or issues
How to fix DTC P2798 on BMW
To fix DTC P2798 on a BMW, the following steps can be taken:
- Replace the electric or auxiliary transmission fluid pump if it is found to be faulty
- Repair or replace any damaged wiring or connectors in the pump control circuit
- Ensure all electrical connections are secure and free of corrosion
- If necessary, replace the transmission control module (TCM)
How to erase DTC P2798 on BMW
After addressing the root cause of DTC P2798 on a BMW, the fault code can be erased using a diagnostic scanner. The scanner can clear the code from the vehicle’s memory and reset the transmission system. Once the fault code is cleared, it is important to test drive the vehicle to ensure the issue has been resolved.