BMW DTC P0801 – Reverse Inhibit Control Circuit/Open
DTC P0801 meaning on BMW
DTC P0801 on a BMW refers to the Reverse Inhibit Control Circuit/Open. This diagnostic trouble code indicates that there is an open circuit in the reverse inhibit control circuit, preventing the proper operation of the reverse gear engagement system.
BMW DTC P0801 symptoms
Symptoms of DTC P0801 on a BMW may include:
- Difficulty engaging or disengaging the reverse gear
- Reverse gear not engaging at all
- Dashboard warning light related to transmission issues
BMW DTC P0801 causes
The common causes of DTC P0801 on a BMW include:
- Open or short circuit in the reverse inhibit control circuit
- Faulty reverse inhibit control solenoid
- Corroded or damaged wiring in the circuit
BMW DTC P0801 seriousness
DTC P0801 should be addressed promptly as it can lead to issues with the proper operation of the reverse gear engagement system. Ignoring this code may result in difficulty or inability to engage the reverse gear, which can affect the vehicle’s drivability and safety.
How to diagnose DTC P0801 on BMW
To diagnose DTC P0801 on a BMW, a mechanic can perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and related data
- Inspect the reverse inhibit control circuit for any open or short circuits
- Check the reverse inhibit control solenoid for proper operation
- Inspect the wiring and connectors in the circuit for any damage or corrosion
How to fix DTC P0801 on BMW
To fix DTC P0801 on a BMW, the following steps can be taken:
- Repair any open or short circuits in the reverse inhibit control circuit
- Replace the faulty reverse inhibit control solenoid if necessary
- Repair or replace any damaged or corroded wiring in the circuit
- Clear the fault code and test the reverse gear engagement system for proper operation
How to erase DTC P0801 on BMW
To erase DTC P0801 on a BMW, the fault code can be cleared using a diagnostic scanner. After the necessary repairs have been made to address the underlying issue causing the fault code, the diagnostic scanner can be used to clear the code from the vehicle’s memory.
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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