Conditions for Setting the DTC: P0090
WARNING: This page is about a different car, the 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
- The high pressure fuel pump actuator voltage is between 1-4.5 V with the actuator commanded OFF.
- The DTC sets when the above condition is present for more than 4 seconds.