Conditions for Setting the DTC
WARNING: This page is about a different car, the 2004 Pontiac Sunfire and 2004 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
C1221 through C1224
- All of the following conditions exists for 2.5 seconds:
- The suspect wheel speed equals zero.
- The other wheel speeds are greater than 8 km/h (5 mph).
- The other wheel speeds are within 11 km/h (7 mph) of each other.
C1225 through C1228
- The EBCM detects a rapid variation in the wheel speed. The wheel speed changes by 16 km/h or more in 0.01 second. The change must occur 3 times with no more than 1.0 second between occurrences.
C1232 through C1235
- One of the following conditions exists for 0.02 seconds:
- A short to voltage - the wheel speed sensor signal circuit and wheel speed sensor return circuit voltages are both greater than 4.25 volts.
- A short to ground - the wheel speed sensor signal circuit and wheel speed sensor return circuit voltages are both less than 0.75 volts.
- An open - the wheel speed sensor signal circuit voltage is greater than 4.25 volts and wheel speed sensor return circuit voltage is less than 0.75 volts.