Conditions for Setting the DTC: C0203

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.