C1237moderate severityChassis
Foreign Matter Attached on Tip of Rear Speed Sensor RH
on 2000 Toyota Tacoma 2.7L I4 · RWD
What this code means
Metallic debris is stuck to the rear right wheel speed sensor tip, disrupting the signal. No direct OBD P-code equivalent for this chassis code.
Symptoms
- ABS warning light on
- Erratic rear RH wheel speed reading
- Intermittent ABS activation
Common causes
- Metal debris on sensor tip
- Damaged sensor rotor/tone ring
- Excessive sensor air gap
- Faulty wheel speed sensor
Diagnostic steps
- Remove and clean sensor tip
- Inspect tone ring for damage
- Check sensor air gap
- Replace sensor if signal remains poor
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Other Chassis codes on this vehicle
C0021
LF Wheel Speed Sensor Range/Performance
C0021
LF Wheel Speed Sensor Range/Performance
C0022
RF Wheel Speed Sensor Range/Performance
C0022
RF Wheel Speed Sensor Range/Performance
C0023
LR Wheel Speed Sensor Range/Performance
C0023
LR Wheel Speed Sensor Range/Performance
C0024
RR Wheel Speed Sensor Range/Performance
C0024
RR Wheel Speed Sensor Range/Performance
C0025
LF Wheel Speed Sensor Circuit Intermittent
C0025
LF Wheel Speed Sensor Circuit Intermittent