P1237

INJECTOR 1





Fault Symptoms
Other diagnostic trouble codes, if any, such as misfiring, adaptation, etc.

Conditions.
P1237
^ Engine speed higher than 80 rpm.
^ Battery voltage 7.5-17 V.
^ Break

Diagnostic Procedure.
See diagnostic trouble code P1213.





Check The Wiring.
Intermittent faults may occur as a result of occasional short circuits and breaks in the wiring. Jiggle the leads and in-line connectors at several places and in different directions to reveal faults in the wiring harness.
Observe the multimeter, Tech 2 diagnostics instrument or test lamp while carrying out this check.