Cause
Faulty wheel speed sensor
One sensor per wheel, feeding anti-lock braking and stability control. The brakes still work — the anti-lock system only ever releases pressure the driver has already applied — so what is lost is a capability that only appears in an emergency.
The tone ring it reads is a common cause in its own right, so a clean signal from a new sensor is not guaranteed.
Typically a moderate job.
Codes this can cause (38)
Codes where this is a likely explanation first, rather than merely a possible one.
- C0031 Left Front Wheel Speed Sensor Likely for this code Moderate
- C0034 Right Front Wheel Speed Sensor Likely for this code Moderate
- C0037 Left Rear Wheel Speed Sensor Likely for this code Moderate
- C003A Right Rear Wheel Speed Sensor Likely for this code Moderate
- C003D Rear Wheel Speed Sensor Likely for this code Moderate
- P0856 Traction Control Input Signal Likely for this code Moderate
- P0857 Traction Control Input Signal Range/Performance Likely for this code Moderate
- P2159 Vehicle Speed Sensor B Circuit Range/Performance Likely for this code High
- P215B Vehicle Speed - Output Shaft Speed Correlation Likely for this code Moderate
- P215C Output Shaft Speed - Wheel Speed Correlation Likely for this code Moderate
- P2162 Vehicle Speed Sensor A/B Correlation Likely for this code High
- P2545 Torque Management Request Input Signal A Range/Performance Likely for this code High
- P2549 Torque Management Request Input Signal B Range/Performance Likely for this code High
- U0415 Invalid Data Received From Anti-Lock Brake System (ABS) Control Module Likely for this code High
- U0416 Invalid Data Received From Vehicle Dynamics Control Module Likely for this code High
- U0419 Invalid Data Received From Steering Effort Control Module Likely for this code High
- U041E Invalid Data Received From All Wheel Drive Control Module Likely for this code Moderate
- C0030 Left Front Tone Wheel Moderate
- C0032 Left Front Wheel Speed Sensor Supply Moderate
- C0033 Right Front Tone Wheel Moderate
- C0035 Right Front Wheel Speed Sensor Supply Moderate
- C0036 Left Rear Tone Wheel Moderate
- C0038 Left Rear Wheel Speed Sensor Supply Moderate
- C0039 Right Rear Tone Wheel Moderate
- C003B Right Rear Wheel Speed Sensor Supply Moderate
Information, not instruction
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Others who found this
Be the first to write this up
Nothing posted about this yet. Whatever you found is worth writing down — even a dead end saves someone the same afternoon.
What makes one worth reading:
- The car — make, model, year and engine. The same fault behaves differently on each.
- What you measured, not only what you replaced.
- What actually fixed it — or that nothing did, which is worth knowing too.
Sign in or create an account to add what you found about Faulty wheel speed sensor.