1998 Chevrolet/ Geo Express DTC P1336 Crankshaft Position (CKP) System Variation Not Learned
Important
A control module power disconnect with the ignition ON may erase the stored pulse value and set the DTC P1336.
Disconnecting the control module will not erase the learned crankshaft position system variation as long as the ignition switch is in the OFF position.
Important
Reprogramming the control module does not require running the Crankshaft Position System Variation Learn Procedure unless the module is new or from another vehicle.
If the crankshaft position system variation is not within an acceptable range, or can not be learned, DTC P1336 sets.
Conditions for Running the DTC
The engine is running.
Conditions for Setting the DTC
The VCM has not learned the crankshaft position system variation.
Action Taken When the DTC Sets
The control module illuminates the malfunction indicator lamp (MIL) the first time the diagnostic runs and fails. Download File PDF
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