Conditions for Setting the DTC
WARNING: This page is about a different car, the 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
P0090
- The fuel pressure regulator voltage is between 1-4.5 volts with the fuel pressure regulator commanded OFF.
- The DTC sets when the above condition is present for more than 4 seconds.
P0091
- The fuel pressure regulator voltage is less than 2.7 volts with the fuel pressure regulator commanded OFF.
- The DTC sets when the above condition is present for more than 4 seconds.
P0092
- The fuel pressure regulator voltage is greater than 4.5 volts with the fuel pressure regulator commanded ON.
- The DTC sets when the above condition is present for more than 4 seconds.