BMW DTC P1A2A – Drive Motor ‘B’ Control Module 5V Logic Voltage Circuit High
DTC P1A2A meaning on BMW
The DTC P1A2A fault code on BMW vehicles indicates an issue with the Drive Motor ‘B’ Control Module 5V Logic Voltage Circuit being too high. This fault code is specific to the electric drive system of BMW hybrid or electric vehicles.
BMW DTC P1A2A symptoms
Symptoms of the DTC P1A2A fault code on a BMW may include:
- Check Engine Light (MIL) illuminated
- Reduced power or performance
- Vehicle may go into a reduced power or limp mode
BMW DTC P1A2A causes
Common causes of the DTC P1A2A fault code on BMW vehicles include:
- Faulty Drive Motor ‘B’ Control Module
- Wiring or connection issues in the 5V logic voltage circuit
- Software or programming issues
BMW DTC P1A2A seriousness
The DTC P1A2A fault code should be addressed promptly as it can affect the performance and drivability of the vehicle. Ignoring this fault code may lead to further damage to the electric drive system components.
How to diagnose DTC P1A2A on BMW
To diagnose the DTC P1A2A fault code on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes and freeze frame data
- Inspect the Drive Motor ‘B’ Control Module and related wiring for any visible damage or corrosion
- Perform voltage and continuity tests on the 5V logic voltage circuit
- Check for any software updates or reprogramming needed
How to fix DTC P1A2A on BMW
Depending on the root cause of the DTC P1A2A fault code, the following steps may be taken to fix the issue:
- Replace the faulty Drive Motor ‘B’ Control Module
- Repair or replace any damaged wiring or connectors in the 5V logic voltage circuit
- Perform software updates or reprogramming as necessary
How to erase DTC P1A2A on BMW
After the issue causing the DTC P1A2A fault code has been resolved, the fault code can be cleared using a diagnostic scanner. The scanner can access the vehicle’s onboard computer system to erase the fault code and reset the Check Engine Light.
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
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.