BMW DTC P108C – H2-Rail Pressure Control System Deviation Too High
DTC P108C meaning on BMW
DTC P108C on a BMW indicates that there is a deviation too high in the H2-Rail Pressure Control System. This means that the actual fuel rail pressure is not within the expected range set by the vehicle’s engine control module.
BMW DTC P108C symptoms
Symptoms of DTC P108C on a BMW may include rough idling, reduced engine performance, hesitation during acceleration, and in some cases, the vehicle may go into limp mode where it limits power to prevent further damage.
BMW DTC P108C causes
The most common causes of DTC P108C on a BMW include a faulty fuel pressure sensor, a clogged fuel filter, a malfunctioning fuel pump, or issues with the fuel pressure regulator. Additionally, wiring or connector issues related to the fuel pressure control system can also trigger this fault code.
BMW DTC P108C seriousness
DTC P108C should be taken seriously as it can lead to poor engine performance and potential drivability issues. Ignoring this fault code may result in further damage to the engine or fuel system components.
How to diagnose DTC P108C on BMW
To diagnose DTC P108C on a BMW, a mechanic would typically start by using a diagnostic scan tool to retrieve the fault code and then perform a visual inspection of the fuel system components. They may also test the fuel pressure sensor, fuel pump, and related wiring for proper operation.
How to fix DTC P108C on BMW
Fixing DTC P108C on a BMW involves addressing the root cause of the issue. This may include replacing a faulty fuel pressure sensor, cleaning or replacing a clogged fuel filter, repairing or replacing a malfunctioning fuel pump, or fixing any wiring or connector issues in the fuel pressure control system.
How to erase DTC P108C on BMW
Once the underlying issue causing DTC P108C on a BMW has been resolved, the fault code can be cleared using a diagnostic scan tool. This will erase the code from the vehicle’s memory and turn off the check engine light.