BMW DTC P0888 – TCM Power Relay Sense Circuit
DTC P0888 meaning on BMW
DTC P0888 on a BMW refers to the Transmission Control Module (TCM) Power Relay Sense Circuit being high. This means that the TCM is not receiving the expected voltage signal from the power relay sense circuit.
BMW DTC P0888 symptoms
Symptoms of DTC P0888 on a BMW may include:
- Transmission shifting issues
- Engine stalling
- Check Engine Light (CEL) illuminated
BMW DTC P0888 causes
Common causes of DTC P0888 on a BMW include:
- Defective power relay
- Faulty TCM
- Wiring or connection issues in the power relay sense circuit
BMW DTC P0888 seriousness
DTC P0888 can lead to drivability issues and potential transmission problems if left unresolved. It is important to address this issue promptly to prevent further damage to the vehicle.
How to diagnose DTC P0888 on BMW
To diagnose DTC P0888 on a BMW, you can perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the power relay and its connections for any visible damage
- Check the TCM for proper operation
- Test the power relay sense circuit for continuity and voltage
How to fix DTC P0888 on BMW
To fix DTC P0888 on a BMW, you can try the following solutions:
- Replace the faulty power relay
- Repair any damaged wiring or connections in the power relay sense circuit
- If the TCM is faulty, replace it with a new one
How to erase DTC P0888 on BMW
To erase DTC P0888 on a BMW, you can clear the fault codes using a diagnostic scanner. After fixing the underlying issue, you can reset the codes to turn off the Check Engine Light and ensure that the problem has been resolved.
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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