BMW DTC P301C – Injector 3 Stuck Open
DTC P301C meaning on BMW
The Diagnostic Trouble Code (DTC) P301C for BMW indicates that Injector 3 is stuck open. This means that the fuel injector for cylinder 3 is not closing properly, causing an excessive amount of fuel to be delivered to the cylinder.
BMW DTC P301C symptoms
Symptoms of DTC P301C on a BMW may include rough idling, misfires, decreased fuel efficiency, engine hesitation, and potentially black smoke coming from the exhaust due to the rich fuel mixture.
BMW DTC P301C causes
The common causes of DTC P301C on a BMW include a faulty fuel injector, wiring issues, a clogged injector, or a problem with the Engine Control Module (ECM).
BMW DTC P301C seriousness
Ignoring DTC P301C on a BMW can lead to engine damage, decreased performance, and potential catalytic converter damage due to the unburned fuel entering the exhaust system.
How to diagnose DTC P301C on BMW
To diagnose DTC P301C on a BMW, a mechanic would typically perform a visual inspection of the injector and its wiring, conduct a fuel injector test, check for any fuel leaks, and use a scan tool to monitor the injector’s operation.
How to fix DTC P301C on BMW
Fixing DTC P301C on a BMW may involve replacing the faulty fuel injector, repairing any wiring issues, cleaning or unclogging the injector, or reprogramming the ECM if necessary.
How to erase DTC P301C on BMW
Once the underlying issue causing DTC P301C on a BMW has been resolved, the code can be erased using a scan tool capable of clearing fault codes. This will reset the Check Engine Light and allow for a fresh start in monitoring the vehicle’s performance.
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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