BMW DTC P310C – Cylinder 1 High Pressure Injector Low Side/High Side Circuit Open
DTC P310C meaning on BMW
The DTC P310C code on a BMW indicates an issue with the Cylinder 1 High-Pressure Injector Low Side/High Side Circuit being open. This means that there is a problem with the electrical circuit that controls the high-pressure fuel injector for cylinder 1 in the engine.
BMW DTC P310C symptoms
Symptoms of the BMW DTC P310C code may include rough idling, misfires, loss of power, poor fuel efficiency, and potentially an illuminated check engine light on the dashboard.
BMW DTC P310C causes
The causes of the BMW DTC P310C code can vary but commonly include issues such as a faulty high-pressure fuel injector, wiring harness problems, poor electrical connections, or a malfunctioning engine control module (ECM).
BMW DTC P310C seriousness
Ignoring the DTC P310C code on a BMW can lead to poor engine performance, reduced fuel efficiency, potential engine damage, and increased emissions. It is important to address this issue promptly to prevent further complications.
How to diagnose DTC P310C on BMW
To diagnose the DTC P310C on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s ECM. They would then perform a visual inspection of the high-pressure injector and its wiring harness to check for any visible damage or loose connections. Additionally, testing the injector’s resistance and checking the voltage supply to the injector may be necessary to pinpoint the issue accurately.
How to fix DTC P310C on BMW
Fixing the DTC P310C on a BMW may involve replacing the faulty high-pressure fuel injector, repairing any damaged wiring or connectors, or reprogramming the engine control module if necessary. It is crucial to follow the manufacturer’s repair procedures and use quality replacement parts to ensure a proper fix.
How to erase DTC P310C on BMW
Once the underlying issue causing the DTC P310C on a BMW has been resolved, the fault codes can be cleared using a diagnostic scanner. This will reset the check engine light and erase the stored fault codes from the ECM’s memory. It is essential to verify that the issue has been successfully addressed 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
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.