DTC P1023: Fuel Pressure/Quantity Too Low At Start: Notes

Diagnostic information - DME (DFI) control unit 

INFORMATION 1 

This fault entry can be caused by various reasons.

• If the fault was NOT entered while the engine was starting  , but while the engine was running normally, a check must be carried out in the crankshaft sensor  area (See 2  ).
• Fault finding in the fuel area must only be carried out if a customer complains that starting times are too long AND if the fault was entered while the engine was starting.
• If there is no such customer complaint, however, the only measure to be taken is to clear the fault memory.