P0337

Read the instructions below then start the fault diagnostic procedure.

Symptom: CHECK ENGINE. Possible misfiring before diagnostic trouble code is generated. The engine cannot be started if the fault is permanent.

P0337

Fault symptoms

•	CHECK ENGINE.

•	Possible misfiring before diagnostic trouble code is generated.

•	The engine cannot be started if the fault is permanent.

On-Board Diagnostics

Type of diagnosis:

-	Continuous. However, it is interrupted once the fault criteria have been fulfilled and does not restart until the next driving cycle.

Enable criteria: (Conditions that must be fulfilled for diagnostics to be performed.)

-	Ignition in position ON. Immobilizer not active. Ignition key in position ST. Main relay voltage drops by more than 0.8V. Pressure in intake manifold drops by more than 3 kPa.

Fault criteria: (When enable criteria have been fulfilled, diagnostics will check if the fault criteria have been fulfilled.)

-	No voltage from crankshaft position sensor for 4s.

Dependents: (Once fault criteria have been fulfilled, a number of other diagnostics must report OK before the diagnostic trouble code can finally be generated.)

-

None.

System reaction to a fault: (Once the fault criteria have been fulfilled, certain measures will sometimes be taken.)

-

None.

OK report: (This diagnosis may be included as a dependent to another diagnosis and must therefore report OK even if it is continuous. The OK report is also used in fault handling to count down the fault counter.)

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

Fault handling: (Refer to section “Fault diagnosis, general” for more information.)

-

Type III.

Diagnostic help

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

Diagnostic tool functions related to this fault:

•	Diagnostic status for the diagnosis.

•	Engine speed, unit rpm.

Refer also to the description of readings under ”Fault diagnosis, general” for more information

Check the wiring

Jiggle the wiring harness at several points and in different directions to check if there are intermittent breaks and short-circuits in the leads. Observe the multimeter, test lamp or diagnostic instrument during the test.

See .