BMW DTC P3151 – Cylinder 2 High Pressure Injector High Side Shorted to Coil
DTC P3151 meaning on BMW
The DTC P3151 on a BMW indicates that there is a high-pressure injector high side shorted to the coil in cylinder 2. This means that there is an electrical issue causing a short circuit between the high-pressure injector and the coil in the second cylinder of the engine.
BMW DTC P3151 symptoms
Symptoms of the DTC P3151 on a BMW may include rough idling, misfiring, loss of power, engine stalling, and potentially an illuminated check engine light on the dashboard.
BMW DTC P3151 causes
The most common causes of the DTC P3151 on a BMW are a faulty high-pressure injector, a short circuit in the wiring harness between the injector and the coil, or a malfunctioning engine control module (ECM).
BMW DTC P3151 seriousness
The DTC P3151 is a serious issue that should be addressed promptly. Ignoring this fault can lead to engine performance issues, increased fuel consumption, and potential damage to other engine components.
How to diagnose DTC P3151 on BMW
To diagnose the DTC P3151 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault codes stored in the ECM. They would then perform a visual inspection of the wiring harness, high-pressure injector, and coil in cylinder 2 to check for any visible damage or signs of a short circuit.
How to fix DTC P3151 on BMW
To fix the DTC P3151 on a BMW, the faulty high-pressure injector or damaged wiring harness would need to be replaced. Additionally, the ECM may need to be reprogrammed or replaced if it is found to be the cause of the short circuit.
How to erase DTC P3151 on BMW
Once the underlying issue causing the DTC P3151 on a BMW has been fixed, the fault codes can be cleared using a diagnostic scanner. This will erase the DTC P3151 code from the ECM’s memory and turn off the check engine light on the dashboard.
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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