C140Ahigh severityChassis
Left Front Wheel Speed Sensor Circuit
on 2013 Ram 2500 6.7L I6 Cummins Diesel · 4WD
What this code means
A circuit fault is detected in the left front wheel speed sensor (OBD equivalent C0035). ABS and stability control lose that wheel's speed reading.
Symptoms
- ABS light on
- ESP disabled
- Speedometer may read wrong
Common causes
- Faulty wheel speed sensor
- Damaged sensor wiring
- Corroded connector
- Damaged tone ring
Diagnostic steps
- Scan for wheel speed codes
- Check sensor and tone ring
- Inspect wiring and connector
- Replace sensor if faulty
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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
C0036
Left Front Wheel Speed Signal Erratic