Conditions for Running the DTC
WARNING: This page is about a different car, the 2017 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
P0340 Condition 1
- DTCs P0101, P0102 and P0103 are not set.
- The starter is engaged and the engine control module detects camshaft position sensor pulses.
- The airflow into the engine is greater than 3 g/s.
Condition 2
- DTC P0641 is not set.
- The engine is running.
- The starter is not engaged.
Condition 3
- DTC P0335, P0336, P0641, or P0651 is not set.
- The crankshaft is synchronized.
- The starter is engaged and then disengaged.
Condition 4
- DTC P0335, P0336, P0641, or P0651 is not set.
- The crankshaft is synchronized.
P0341 Condition 1
- DTC P0335, P0336, P0641, or P0651 is not set.
- The crankshaft is synchronized.
- The starter is engaged and then disengaged.
Condition 2
- DTC P0335, P0336, P0641, or P0651 is not set.
- The crankshaft is synchronized.
The DTCs run continuously once the above conditions are met.