Conditions for Running the DTC

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.

P034A

DTC P0335, P0336, P0651 = Not set
Crankshaft position is being verified.
Engine=Running - After an autostop event.

Frequency the DTC runs=Continuously - After the running conditions are met

P034B

DTC P0335, P0336, P0651 = Not set
Crankshaft Position Sensor=Signal received.
Engine Speed =400 to 2, 000 RPM
MAF Sensor=Greater than 1.5 g/s

Frequency the DTC runs=Continuously - After the running conditions are met