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P1641

Read the instructions below then start the fault diagnostic procedure.

Symptom: Engine fails to start. Misfiring before DTC is generated.

P1641


Fuel Pump Relay. No Voltage to Fuel Pump and O2S Preheating.


Fault symptoms


• Engine fails to start.

• Misfiring before DTC is generated.


Conditions

The following conditions apply for this DTC:


• Crankshaft rotating and engine misfiring.

• O2S preheating active.


Diagnostic help

Fault diagnosis concerns electrical faults in connecting cables or in the relay.

Diagnostic tool functions related to this fault are:


• Activation of output for fuel pump relay.


See also the description of activations under Menu "Activation" for more information.

Note

Check the wiring

Jiggle the leads and in-line connectors at various points and in different directions to detect any intermittent breaks or short circuits in the wiring. Observe the multimeter, test lamp or diagnostic tool while doing this.