BMW DTC P0798 – Pressure Control Solenoid ‘C’ Electrical
DTC P0798 meaning on BMW
The Diagnostic Trouble Code (DTC) P0798 for BMW refers to an issue with the Pressure Control Solenoid ‘C’ electrical circuit. This code indicates that there is a malfunction in the electrical circuit controlling the pressure control solenoid ‘C’ in the transmission.
BMW DTC P0798 symptoms
Symptoms of DTC P0798 on a BMW may include:
- Harsh shifting
- Transmission slipping
- Transmission overheating
- Transmission not shifting into certain gears
- Check Engine Light illuminated
BMW DTC P0798 causes
Common causes of DTC P0798 on a BMW include:
- Faulty pressure control solenoid ‘C’
- Wiring or connector issues in the solenoid circuit
- Low transmission fluid level or dirty fluid
- Internal transmission problems
BMW DTC P0798 seriousness
Ignoring DTC P0798 on a BMW can lead to further transmission damage and potentially unsafe driving conditions. It is important to address this issue promptly to prevent more severe problems and costly repairs.
How to diagnose DTC P0798 on BMW
To diagnose DTC P0798 on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault code
- Inspect the wiring and connectors in the pressure control solenoid ‘C’ circuit
- Check the transmission fluid level and condition
- Perform a transmission pressure test
- Test the pressure control solenoid ‘C’ for proper operation
How to fix DTC P0798 on BMW
To fix DTC P0798 on a BMW, the following steps may be taken:
- Replace the pressure control solenoid ‘C’ if faulty
- Repair any damaged wiring or connectors in the circuit
- Ensure the transmission fluid is at the correct level and in good condition
- Address any internal transmission issues if necessary
How to erase DTC P0798 on BMW
To erase DTC P0798 on a BMW, the fault code can be cleared using a diagnostic scanner. After the repair has been made and the issue resolved, the code can be cleared to reset the Check Engine Light and ensure the system recognizes the problem has been fixed.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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