P0030 or P0036
WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- The Ignition 1 Signal parameter is between 10-18 volts.
- The engine speed is more than 400 RPM.
- DTC P0030 or P0036 runs continuously when the above conditions are met for 1 second.