BMW DTC P312D – Cylinder 6 High Pressure Injector Low Side Interturn Short Circuit or Circuit High
DTC P312D meaning on BMW
DTC P312D is a fault code that indicates a Cylinder 6 High Pressure Injector Low Side Interturn Short Circuit or Circuit High issue on a BMW vehicle. This fault code is specific to the high-pressure fuel injector in cylinder 6 of the engine.
BMW DTC P312D symptoms
Symptoms of DTC P312D on a BMW may include rough idling, misfires, loss of power, decreased fuel efficiency, and potentially an illuminated check engine light on the dashboard.
BMW DTC P312D causes
The causes of DTC P312D on a BMW can vary, but common reasons include a faulty high-pressure fuel injector, wiring issues, or a problem with the engine control module (ECM).
BMW DTC P312D seriousness
Ignoring DTC P312D on a BMW can lead to poor engine performance, potential damage to the catalytic converter, and increased emissions. It is important to address this issue promptly to prevent further damage to the vehicle.
How to diagnose DTC P312D on BMW
To diagnose DTC P312D on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and then perform a visual inspection of the high-pressure fuel injector in cylinder 6. They may also test the wiring and connections related to the injector to identify any issues.
How to fix DTC P312D on BMW
Fixing DTC P312D on a BMW may involve replacing the faulty high-pressure fuel injector in cylinder 6, repairing any damaged wiring or connections, or reprogramming the engine control module (ECM) 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 P312D on BMW
Once the underlying issue causing DTC P312D on a BMW has been fixed, the fault code can be erased using a diagnostic scanner. This will clear the code from the vehicle’s memory and turn off the check engine light. It is important to ensure that the repair has been successful before clearing the fault code.
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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