BMW DTC P0A79 – Drive Motor ‘B’ Inverter Performance
DTC P0A79 meaning on BMW
The DTC P0A79 error code on a BMW indicates an issue with the Drive Motor ‘B’ Inverter performance. This fault code is specific to the hybrid or electric vehicles in the BMW lineup and points towards a problem with the inverter that controls the drive motor ‘B’.
BMW DTC P0A79 symptoms
Symptoms of the DTC P0A79 error code on a BMW may include:
- Reduced power or acceleration
- Engine hesitation
- Check Engine Light (CEL) illuminated on the dashboard
- Vehicle going into limp mode
BMW DTC P0A79 causes
Common causes of the DTC P0A79 error code on a BMW include:
- Faulty drive motor ‘B’ inverter
- Issues with the inverter cooling system
- Electrical wiring or connector problems
- Software glitches in the inverter control module
BMW DTC P0A79 seriousness
The DTC P0A79 error code should be taken seriously as it can affect the performance and drivability of the vehicle. Ignoring this fault code may lead to further damage to the drive motor ‘B’ inverter and other related components.
How to diagnose DTC P0A79 on BMW
To diagnose the DTC P0A79 error code on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the drive motor ‘B’ inverter for any visible damage or signs of overheating
- Check the inverter cooling system for proper operation
- Test the electrical connections and wiring related to the inverter
- Perform a software update or reprogramming if necessary
How to fix DTC P0A79 on BMW
Fixing the DTC P0A79 error code on a BMW may involve the following steps:
- Replace the faulty drive motor ‘B’ inverter
- Repair or replace any damaged wiring or connectors
- Ensure the inverter cooling system is functioning correctly
- Perform a software update or reprogramming of the inverter control module
How to erase DTC P0A79 on BMW
To erase the DTC P0A79 error code on a BMW, a mechanic can use a diagnostic scanner to clear the fault codes stored in the vehicle’s computer system. Once the issue has been fixed and the codes cleared, the Check Engine Light should turn off.
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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