C0236
Rear Wheel Speed Sensor Circuit Erratic (Right)
Moderatesensor
Overview
The C0236 diagnostic trouble code means the chassis control module has identified a rear wheel speed sensor circuit erratic (right) problem. This code relates to a chassis sensor providing incorrect or missing data to the control module. Chassis sensor issues can affect braking, steering, and stability control performance.
Symptoms
- Cruise control not functioning
- Erratic gauge readings on dashboard
- ABS or traction control warning light on
- Poor engine performance
Common Causes
- Failed speed sensor or position sensor
- Sensor out of calibration
- Water intrusion in sensor connector
- Physical damage to sensor
Diagnosis Steps
- 1Connect an OBD-II scanner and read all stored trouble codes and freeze frame data
- 2Locate the specific sensor referenced by the code
- 3Inspect the sensor connector for corrosion, damage, or loose pins
- 4Test the sensor output using a multimeter or scan tool live data
- 5Check the wiring between the sensor and the PCM for opens or shorts
Estimated Repair Cost
$75 — $350
Cost varies by vehicle, location, and repair shop. Includes parts and labor.
Commonly Affected Vehicles
Mazda 3Nissan SentraVolkswagen GolfHyundai Elantra
Related Codes
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LowFrequently Asked Questions
Most automotive sensors last 80,000-150,000 miles, though this varies by sensor type and driving conditions. Oxygen sensors and temperature sensors tend to degrade gradually over time.