08851 - P2293 - Fuel pressure regulator valve (N276). Mechanical failure.
Fault code recorded in the engine control unit.
Engine warning light (MIL) on.
Engine stops when outdoor temperatures are high but it can be started again immediately.
NOTE: This technical note only affects those vehicles that are equipped with a low pressure fuel sensor (G410).
NOTE: This technical note affects only those vehicles that are within a specific manufacturing date.
- Internal defect of the fuel pump.
- Defect in the engine control unit software.
- Read the fault codes recorded in the engine control unit (ECU) using the diagnostic tool.
- Confirm that the fault code is the same as the one that appears in the field symptoms of this bulletin.
- Check the proper operation of the low pressure fuel circuit. Repair if necessary.
- If the low pressure system is correct, check the tightening torque (50Nm) of the fastening nut of the fuel pressure regulator valve (N276).
- Check software version of the engine control unit if the tightening torque is correct.
- Clear the fault codes recorded in the engine control unit (ECU) using the diagnostic tool.
- Reprogramme the engine control unit (ECU) with updated software from the manufacturer.
- Replace the fuel pump if the failure still persists after the reprogramming.
NOTE: In the vehicles fitted as standard with an auxiliary heater, the vacuum control unit in the fuel metering pump must be replaced.
See image 1:
A - Low pressure fuel pump to be replaced.