BMW DTC P3142 – Cylinder 11 High Pressure Injector Low Side Circuit High
DTC P3142 meaning on BMW
DTC P3142 on a BMW indicates an issue with the Cylinder 11 High Pressure Injector Low Side Circuit High. This means that there is a problem with the electrical circuit that controls the high-pressure fuel injector for cylinder 11 in the engine.
BMW DTC P3142 symptoms
Symptoms of DTC P3142 on a BMW may include rough idling, misfiring, loss of power, poor fuel efficiency, and in some cases, the Check Engine Light may illuminate on the dashboard.
BMW DTC P3142 causes
The common causes of DTC P3142 on a BMW include a faulty high-pressure fuel injector, wiring issues in the injector circuit, a defective Engine Control Module (ECM), or a poor connection in the injector circuit.
BMW DTC P3142 seriousness
Ignoring DTC P3142 on a BMW can lead to engine performance issues, reduced fuel efficiency, and potential damage to the engine over time. It is important to address this issue promptly to prevent further complications.
How to diagnose DTC P3142 on BMW
To diagnose DTC P3142 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault codes stored in the ECM. They would then inspect the high-pressure injector for cylinder 11, check the wiring and connections in the injector circuit, and perform a thorough visual inspection for any visible damage.
How to fix DTC P3142 on BMW
Fixing DTC P3142 on a BMW may involve replacing the faulty high-pressure fuel injector for cylinder 11, repairing any damaged wiring or connections in the injector circuit, or replacing the Engine Control Module if necessary. It is recommended to follow the manufacturer’s repair procedures and use genuine BMW parts for the best results.
How to erase DTC P3142 on BMW
Once the underlying issue causing DTC P3142 on a BMW has been fixed, the fault codes can be cleared using a diagnostic scanner. This will reset the Check Engine Light and erase the DTC P3142 code from the ECM’s memory. It is important to ensure that the repair has been successful before clearing the fault codes.
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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