Conditions for Running the DTCs

WARNING: This page is about a different car, the 2018 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.

P0601, P0602, P0630

These DTCs run continuously when the ignition is ON.

P0603, P062F

These DTCs run during ECM power up.

P0604

DTC P0604 runs continuously when the ignition is ON for greater than 30 s.

P0606

The ignition is ON.
The system voltage is greater than 11 V.
DTC P0606 runs continuously when the above conditions are met.

P16F3

The engine speed is greater than 500 RPM.
DTCs P0101, P0102, P0103, P0106, P0107, P0108, P2227, P2228, P2229 or P2230 are not set.
DTC P16F3 runs continuously when the above conditions are met.

P262B

DTC P262B runs during ECM power down.