BMW DTC P314D – Cylinder 10 High Pressure Injector Low Side Interturn Short Circuit or Circuit High
DTC P314D meaning on BMW
DTC P314D on a BMW indicates a fault with the high-pressure injector for cylinder 10. Specifically, it points to a low side interturn short circuit or circuit high issue. This fault can affect the fuel delivery to the engine cylinder, leading to performance issues.
BMW DTC P314D symptoms
Symptoms of DTC P314D 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 P314D causes
The causes of DTC P314D on a BMW can vary, but common reasons include a faulty high-pressure injector, wiring issues, or a problem with the engine control module (ECM).
BMW DTC P314D seriousness
The seriousness of DTC P314D on a BMW should not be ignored, as it can lead to drivability issues and potential engine damage if left unresolved. It is recommended to address this fault promptly.
How to diagnose DTC P314D on BMW
To diagnose DTC P314D on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault codes and perform a thorough inspection of the high-pressure injector for cylinder 10, as well as the related wiring and connections.
- Use a diagnostic scanner to read the fault codes.
- Inspect the high-pressure injector for cylinder 10 for any visible damage or leaks.
- Check the wiring harness and connectors for any signs of wear or corrosion.
- Perform a fuel system pressure test to ensure proper fuel delivery.
How to fix DTC P314D on BMW
Fixing DTC P314D on a BMW typically involves addressing the root cause of the fault, which may include replacing the high-pressure injector for cylinder 10, repairing any damaged wiring, or reprogramming the engine control module (ECM).
- Replace the faulty high-pressure injector for cylinder 10.
- Repair or replace any damaged wiring or connectors.
- Reprogram the engine control module (ECM) if necessary.
- Clear the fault codes and perform a test drive to ensure the issue is resolved.
How to erase DTC P314D on BMW
To erase DTC P314D on a BMW, a mechanic can use a diagnostic scanner to clear the fault codes stored in the engine control module (ECM). Once the fault codes are cleared, the check engine light should turn off.
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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