AI DamageC0037 code: Left Rear Wheel Speed Sensor
Code C0037 is named in 6 US owner complaints. Models: 5, model years 2012–2024.
What the code means
Left Rear Wheel Speed Sensor. Generic meaning per SAE J2012 (the same for all makes).
How to read C0037: the letter C means chassis (brakes, ABS, steering, suspension); the second digit 0 marks a generic SAE code shared by all makes; the last three characters 037 identify the specific fault.
ABS/ESC codes: wheel speed sensors, the ABS hydraulic unit and pump, brake booster, pressure and yaw sensors. A hit to a wheel or suspension often damages the wheel speed sensor or its wiring, so on a damaged car this code is a reason to inspect the hub, knuckle and control arms, not just swap the sensor.
Key figures
- Complaints with this code
- 6
- Models
- 5
- Model years
- 2012–2024
Which models and years
Models whose owners name this code (5). Years link to the model year problems page.
Components named together with the code
Component as the owner filed it (one complaint can list several).
Complaints by model year
What to do if an auction car has this code
- Inspect the wheel and suspension on the impact side: the wheel speed sensor is often damaged together with the hub or knuckle.
- Check whether the ABS and ESC lights stay on after start-up.
- After replacing sensors or the hydraulic unit, bleeding and scan tool adaptation may be required.
What owners report
Excerpts of owner complaints in the original wording. Owner statements not verified by the regulator; personal data removed.
I did however discover, in a panic, that the manual trailer brake lever still works. The cause of the ABS system shut down was determined to be code: C0037-2F (Left Wheel Speed Sensor Signal Erratic) It has be brought in to the dealer for repair at the following mileages: 4,478, 4,699, 13,790, 14,745 and 16,487 miles.
Made a left turn, then proceeded up a hill. Scanned the truck and got code C0037-2F. "Left Rear Wheel Speed Sensor Signal Erratic". Possibly issue with body / chassis / suspension flex or internal axle component being loose. The sensor was already replaced 2x, along with other components under warranty.
In july of 2020 the left front wheel sensor failed causing abs/cruise control and rsc to fail. On january 18th, 2021 the left rear wheel speed sensor fialed providing fault code C0037. The abs/cruise control and rsc failed. Symptoms include transmission shift issues and speed issues.
Related codes
- C0020ABS Pump Motor Control
- U0121Lost Communication With Anti-Lock Brake System…
- U0415Invalid Data Received From Anti-Lock Brake…
- U0416Invalid Data Received From Vehicle Dynamics…
- U0418Invalid Data Received From Brake System…
- C0561Vacuum Sensor A/B Correlation
- C0021Brake Booster Performance
- C0063Yaw Rate Sensor
- C0040Brake Pedal Switch A
- C006CStability System
Sources: public official US data (owner complaints) and the SAE J2012 standard. Complaints are owner statements not verified by the regulator. A code from a complaint does not replace a scan tool diagnosis. Data updated 2026-11-10.