Circuit/System Verification

WARNING: This page is about a different car, the 2010 Chevrolet HHR. However, it is still accessible from the selected car via links, so may be relevant.

Verify DTC C056D 39 is not set.

If the DTC is set, clear the DTC, and operate the vehicle within the conditions for setting the DTC. Verify the DTC does not reset. If the DTC resets, replace the PSCM.