BMW DTC P2291 – Injector Control Pressure Too Low – Engine Cranking
DTC P2291 meaning on BMW
DTC P2291 on a BMW indicates that the Engine Control Module (ECM) has detected that the Injector Control Pressure (ICP) is too low while the engine is cranking. The ICP is a crucial parameter for the proper operation of the fuel injectors in a diesel engine.
BMW DTC P2291 symptoms
Symptoms of DTC P2291 on a BMW may include hard starting, rough idling, loss of power, engine stalling, and potentially an illuminated Check Engine Light.
BMW DTC P2291 causes
The common causes of DTC P2291 on a BMW include a faulty high-pressure fuel pump, a clogged fuel filter, a malfunctioning fuel pressure regulator, a leak in the high-pressure fuel system, or a problem with the ICP sensor.
BMW DTC P2291 seriousness
DTC P2291 should be taken seriously as it can lead to drivability issues and potential engine damage if left unresolved. It is recommended to address this issue promptly to prevent further complications.
How to diagnose DTC P2291 on BMW
To diagnose DTC P2291 on a BMW, a mechanic would typically perform a fuel system pressure test, inspect the high-pressure fuel pump, check for fuel leaks, test the fuel pressure regulator, and verify the operation of the ICP sensor using a diagnostic scan tool.
How to fix DTC P2291 on BMW
The repair process for DTC P2291 on a BMW may involve replacing the high-pressure fuel pump, cleaning or replacing the fuel filter, repairing any fuel leaks, replacing the fuel pressure regulator, or replacing the faulty ICP sensor. It is essential to follow the manufacturer’s recommended repair procedures.
How to erase DTC P2291 on BMW
Once the underlying issue causing DTC P2291 on a BMW has been addressed and repaired, the diagnostic trouble code can be cleared using a diagnostic scan tool capable of clearing fault codes. This will reset the Check Engine Light and allow for a fresh monitoring of the system.
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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