C0036moderate severityChassis
Left Front Wheel Speed Signal Erratic
on 2021 Chevrolet Bolt EV 66 kWh Single Motor FWD · FWD
What this code means
The left front wheel speed sensor signal is erratic or inconsistent.
Symptoms
- ABS light on
- ABS activating at low speeds
- Traction control activating unexpectedly
Common causes
- Cracked tone ring
- Debris on sensor
- Worn wheel bearing
- Damaged wiring
Diagnostic steps
- Scope sensor signal pattern
- Inspect tone ring for cracks
- Clean sensor
- Check wheel bearing
Repair notes
Inspect tone ring carefully. Replace if cracked.
Other Chassis codes on this vehicle
C0021
LF Wheel Speed Sensor Range/Performance
C0022
RF Wheel Speed Sensor Range/Performance
C0023
LR Wheel Speed Sensor Range/Performance
C0024
RR Wheel Speed Sensor Range/Performance
C0025
LF Wheel Speed Sensor Circuit Intermittent
C0026
RF Wheel Speed Sensor Circuit Intermittent
C0027
LR Wheel Speed Sensor Circuit Intermittent
C0028
RR Wheel Speed Sensor Circuit Intermittent
C0035
Left Front Wheel Speed Sensor Circuit
C0040
Right Front Wheel Speed Sensor Circuit