BMW DTC P071A – Transmission Mode Switch ‘A’ Circuit
DTC P071A meaning on BMW
The DTC P071A code on a BMW indicates an issue with the Transmission Mode Switch ‘A’ Circuit. This code is triggered when the powertrain control module (PCM) detects a malfunction in the circuit responsible for monitoring the transmission mode switch ‘A’.
BMW DTC P071A symptoms
Symptoms of the DTC P071A code on a BMW may include:
- Check Engine Light illuminated on the dashboard
- Transmission shifting issues
- Vehicle may go into limp mode
BMW DTC P071A causes
Common causes of the DTC P071A code on a BMW include:
- Faulty transmission mode switch ‘A’
- Wiring or connector issues in the circuit
- PCM software issues
BMW DTC P071A seriousness
The DTC P071A code should not be ignored as it can lead to transmission problems and affect the drivability of the vehicle. It is recommended to address this issue promptly to prevent further damage.
How to diagnose DTC P071A on BMW
To diagnose the DTC P071A code on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the transmission mode switch ‘A’ and its circuit for any visible damage
- Check the wiring and connectors for any loose connections or corrosion
- Test the transmission mode switch ‘A’ for proper functionality
How to fix DTC P071A on BMW
To fix the DTC P071A code on a BMW, the following steps may be taken:
- Replace the faulty transmission mode switch ‘A’
- Repair any damaged wiring or connectors in the circuit
- Clear the fault codes from the PCM memory
- Perform a test drive to ensure the issue has been resolved
How to erase DTC P071A on BMW
To erase the DTC P071A code on a BMW, you can use a diagnostic scanner to clear the fault codes from the PCM memory. Once the codes are cleared, the Check Engine Light should turn off. It is important to address the underlying issue causing the code before clearing it to prevent it from reoccurring.
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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