Audi DTC P1625 – Data-Bus Powertrain Unplausible Message from Transmission Control
DTC P1625 meaning on Audi
DTC P1625 on an Audi refers to a Data-Bus Powertrain Unplausible Message from Transmission Control. This diagnostic trouble code indicates a communication issue between the powertrain control module (PCM) and the transmission control module (TCM) on the vehicle’s data bus network.
Audi DTC P1625 symptoms
Symptoms of DTC P1625 on an Audi may include:
- Check Engine Light (CEL) illuminated on the dashboard
- Transmission shifting issues
- Reduced engine performance
- Vehicle may go into limp mode
Audi DTC P1625 causes
Common causes of DTC P1625 on an Audi include:
- Faulty transmission control module (TCM)
- Wiring or connection issues between the PCM and TCM
- Defective data bus network
- Software glitches in the control modules
Audi DTC P1625 seriousness
DTC P1625 should be addressed promptly as it can lead to drivability issues and potential damage to the transmission system. Ignoring this fault may result in further complications and increased repair costs.
How to diagnose DTC P1625 on Audi
To diagnose DTC P1625 on an Audi, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes stored in the PCM and TCM
- Inspect the wiring and connectors between the PCM and TCM for any damage or corrosion
- Check the data bus network for proper communication signals
- Perform a software update or reprogramming of the control modules if necessary
How to fix DTC P1625 on Audi
To fix DTC P1625 on an Audi, the following steps may be taken:
- Repair or replace any damaged wiring or connectors between the PCM and TCM
- Replace the faulty transmission control module (TCM) if diagnosed as the root cause
- Ensure proper communication on the data bus network
- Perform software updates or reprogramming of the control modules as needed
How to erase DTC P1625 on Audi
After addressing the underlying issue causing DTC P1625 on an Audi, the fault codes can be erased using a diagnostic scanner. The mechanic can clear the codes from the PCM and TCM memory to reset the system and turn off the Check Engine Light.