BMW DTC P0256 – Injection Pump Fuel Metering Control ‘B’ (Cam/Rotor/Injector)
DTC P0256 meaning on BMW
The Diagnostic Trouble Code (DTC) P0256 for BMW refers to an issue with the Injection Pump Fuel Metering Control ‘B’ (Cam/Rotor/Injector). This code indicates a problem with the fuel metering control system, specifically related to the cam, rotor, or injector components.
BMW DTC P0256 symptoms
Symptoms of DTC P0256 on a BMW may include:
- Engine misfires
- Reduced engine performance
- Decreased fuel efficiency
- Check Engine Light (CEL) illuminated on the dashboard
BMW DTC P0256 causes
Common causes of DTC P0256 on a BMW include:
- Faulty fuel injector
- Issues with the camshaft or rotor components
- Wiring or connector problems in the fuel metering control circuit
- Fuel system contamination
BMW DTC P0256 seriousness
The seriousness of DTC P0256 on a BMW should not be ignored, as it can lead to poor engine performance, reduced fuel efficiency, and potential long-term damage to the engine if left unresolved. It is recommended to address this issue promptly to prevent further complications.
How to diagnose DTC P0256 on BMW
To diagnose DTC P0256 on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and related data
- Inspect the fuel injector, camshaft, and rotor components for any visible damage or wear
- Check the wiring and connectors in the fuel metering control circuit for continuity and proper connection
- Perform fuel system pressure tests to ensure proper fuel delivery
How to fix DTC P0256 on BMW
To fix DTC P0256 on a BMW, the following steps may be taken:
- Replace any faulty fuel injectors, camshaft, or rotor components as needed
- Repair or replace any damaged wiring or connectors in the fuel metering control circuit
- Clean or flush the fuel system to remove any contamination
- Reset the fault code and perform a test drive to ensure the issue has been resolved
How to erase DTC P0256 on BMW
To erase DTC P0256 on a BMW, the fault code can be cleared using a diagnostic scanner. After addressing the underlying issue causing the fault code, the scanner can be used to reset the code, clearing it from the vehicle’s memory. It is important to ensure that the root cause of the problem has been fixed before clearing the code to prevent it from reoccurring.
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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