BMW DTC P0885 – TCM Power Relay Control Circuit/Open
DTC P0885 meaning on BMW
DTC P0885 on a BMW refers to the Transmission Control Module (TCM) Power Relay Control Circuit/Open. This diagnostic trouble code indicates that there is an open circuit or a fault in the control circuit for the TCM power relay.
BMW DTC P0885 symptoms
Symptoms of DTC P0885 on a BMW may include:
- Transmission shifting issues
- Transmission stuck in a single gear
- Check Engine Light (CEL) illuminated on the dashboard
BMW DTC P0885 causes
Common causes of DTC P0885 on a BMW include:
- Faulty TCM power relay
- Open or short circuit in the TCM power relay control circuit
- Corroded or loose electrical connections
BMW DTC P0885 seriousness
DTC P0885 can affect the proper operation of the transmission control system in a BMW. Ignoring this fault can lead to drivability issues and potential damage to the transmission components. It is important to address this issue promptly.
How to diagnose DTC P0885 on BMW
To diagnose DTC P0885 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault codes from the TCM.
- Inspect the TCM power relay and its control circuit for any visible damage or corrosion.
- Check the continuity of the TCM power relay control circuit using a multimeter.
- Inspect the electrical connections related to the TCM power relay for any loose or damaged wires.
How to fix DTC P0885 on BMW
To fix DTC P0885 on a BMW, you can try the following:
- Replace the faulty TCM power relay with a new one.
- Repair any open or short circuits in the TCM power relay control circuit.
- Clean or replace corroded electrical connections related to the TCM power relay.
How to erase DTC P0885 on BMW
To erase DTC P0885 on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the TCM. After fixing the underlying issue causing the fault code, you can reset the system by clearing the codes.
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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