Conditions for Setting the DTC: C0203
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Either of the following conditions may cause DTC C0203 to set:
- The zero-pressure signal voltage is detected as being out of range by at least 0.25 volts.
- The brake switch is closed and the master cylinder pressure is greater than 862 kPa (125 psi) for 500 milliseconds, followed by the application of the brake for 200 milliseconds.