C0037: Left Rear Wheel Speed Sensor
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA complaint patterns, then kept at generic code level because this page is not scoped to one make or model.
Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).
- SAE J2012 Diagnostic Trouble Code Definitions — Generic diagnostic trouble code definition reference for C0037.
- NHTSA recalls, complaints, and manufacturer communications — Used to check public complaint context, recall status, and safety-related manufacturer communications by VIN or vehicle.
Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.
What Does C0037 Mean?
C0037 code: Left Rear Wheel Speed Sensor. Symptoms, likely causes, diagnostic path, severity, and repair cost context.
Symptoms of C0037
- ⚠️ Warning light or diagnostic trouble code is stored
- ⚠️ Symptoms vary by vehicle and by the system that set the code
- ⚠️ Related codes, freeze-frame data, and live data are needed before replacing parts
- ⚠️ Vehicle may fail an emissions or safety inspection until the code is resolved and monitors reset
Common Causes
- 🔍 Circuit, sensor, actuator, wiring, connector, module, or mechanical condition detected by the relevant control module
- 🔍 Low battery voltage, poor ground, corrosion, water intrusion, or intermittent connector contact
- 🔍 Vehicle-specific calibration or service bulletin condition that must be checked by VIN
Real Owner Reports
From NHTSA complaint database — actual owner descriptions.
"CAR MALFUNCTIONED TWICE AT HIGH RATE OF SPEEDS WITHIN DAYS OF EACH OTHER. EXTREMELY DANGEROUS DRIVING CONDITIONS. CAR CURRENTLY BEING TOWED AGAIN BUT NOT FIXED.RECEIVED RECALL NOTICE APPROXIMATELY 15 HOURS AFTER CAR FIXED FIRST TIME, INDICATING THE RECALL WAS A KNOWN PROBLEM BECAUSE OF TIMEFRAME. NO"
— Dodge Charger owner, 2012-07-03
Source: NHTSA Complaints Database
Most Reported Vehicles for C0037
Based on NHTSA owner complaint data.
| # | Vehicle | Reports |
|---|---|---|
| 1 | DODGE CHARGER |
Frequently Asked Questions
Is C0037 enough to replace a part?
Can I drive with C0037?
What To Do Next
-
1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
-
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
-
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.