P0337

Read the instructions below then start the fault diagnostic procedure.

Symptom: CHECK ENGINE. Misfiring can occur before trouble code is generated. The engine will not start with permanent fault.

P0337

Fault symptoms

•	CHECK ENGINE.

•	Misfiring can occur before trouble code is generated.

•	The engine will not start with permanent fault.

On-Board Diagnostics

Type of diagnosis:

-	Continuous. But interrupted when fault criteria fulfilled and will not restart until next driving cycle.

Enable criteria:

-	Ignition in ON position. Ignition key in ST position. Main relay voltage drops by more than 0.8 V. The pressure in the intake manifold drops by more than 3 kPa.

Fault criteria:

-	No voltage from crankshaft sensor for 4 s.

Dependents:

-

None.

System reaction to a fault:

-

None.

OK report:

-	Enable criteria for P0336 fulfilled and fault criteria not fulfilled within 60 s.

Fault handling: (See section Fault handling III, other emission-related components and functions for more information.)

-

Type III.

Diagnostic help

Fault diagnosis concerns an electrical fault in connecting leads or in the sensor.

Functions in the diagnostic tool related to the fault:

•	Diagnostic status for the diagnosis.

•	Engine speed, unit rpm.

See also the description of readings under Menu "Read Values" for more information.

Checking the wiring

Jiggle the wiring harness at several points and in different directions to detect intermittent breaks and short circuits. Observe the multimeter, diagnostic tool or test lamp during the check.

See P0336 .