Conditions for Running the DTC

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Chevrolet Suburban, and 2018 Cadillac Escalade ESV. However, it is still accessible from the selected car via links, so may be relevant.

P034A

No DTCs are set.
Engine cranking. - After an autostop event.
Crankshaft position is being verified.

DTCs run continuously when the above conditions are met.

P034B

No DTCs are set.
Engine Speed = 400 to 2, 000 RPM
MAF Sensor = Greater than 3 g/s
Crankshaft Position Sensor = Signal received

DTCs run continuously when the above conditions are met.