BMW DTC P2147 – Fuel Injector Group ‘A’ Supply Voltage Circuit Low
DTC P2147 meaning on BMW
The Diagnostic Trouble Code (DTC) P2147 for BMW indicates a fault in the Fuel Injector Group ‘A’ Supply Voltage Circuit, specifically a low voltage condition. This fault code is typically triggered when the Engine Control Module (ECM) detects that the voltage supplied to the fuel injector group ‘A’ is below the specified threshold.
BMW DTC P2147 symptoms
Symptoms associated with DTC P2147 on a BMW may include:
- Engine misfires or rough idling
- Reduced engine performance
- Check Engine Light (CEL) illuminated on the dashboard
- Potential fuel efficiency issues
BMW DTC P2147 causes
The common causes of DTC P2147 on a BMW include:
- Wiring or connector issues in the fuel injector circuit
- Defective fuel injector in group ‘A’
- Faulty Engine Control Module (ECM)
- Low voltage supply to the fuel injector group ‘A’
BMW DTC P2147 seriousness
While DTC P2147 may not always result in immediate drivability issues, it is important to address this fault promptly to prevent potential engine performance problems and further damage. Ignoring this fault could lead to more severe issues over time.
How to diagnose DTC P2147 on BMW
To diagnose DTC P2147 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the wiring and connectors in the fuel injector group ‘A’ circuit for any damage or corrosion
- Test the voltage supply to the fuel injector group ‘A’ using a multimeter
- Check the resistance of the fuel injector in group ‘A’ to ensure it is within specifications
- If necessary, perform a continuity test on the wiring harness
How to fix DTC P2147 on BMW
To fix DTC P2147 on a BMW, you can consider the following actions:
- Repair or replace any damaged wiring or connectors in the fuel injector circuit
- Replace the faulty fuel injector in group ‘A’ if necessary
- If the ECM is determined to be faulty, it may need to be reprogrammed or replaced
- Ensure the voltage supply to the fuel injector group ‘A’ is within the specified range
How to erase DTC P2147 on BMW
To erase DTC P2147 on a BMW, you can use a diagnostic scanner to clear the fault code from the ECM’s memory. After addressing the underlying issue that triggered the fault code, you can reset the ECM and verify that the code has been successfully cleared.
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.