C0215: Left-rear Wheel Speed Sensor Circuit (Toyota)
Severity: medium
What it means: On Toyotas, C0215 means the ABS computer has a problem with the signal from the left-rear wheel speed sensor circuit. The ABS uses the sensor to know how fast that wheel is turning. With a bad signal, the ABS and stability control shut off and the warning lights come on.
Safe to drive? Normal brakes still work, but ABS and stability control may not. Drive carefully, leave extra room on wet or icy roads, and get it checked. If the red brake light is on, also check the brake fluid level.
Common symptoms
- ABS light, sometimes with the red brake light
- Traction or stability control light
- Unwanted ABS activation at low speed on some cars
Likely causes, ranked
- Corroded or loose connector at the rear sensorDIY
- Damaged sensor wiring harnessDIY or shop
- Failed sensor (on the Yaris it is part of the rear wheel bearing)Shop
Vehicle-specific notes
- 2007–2011 Toyota Yaris: Toyota bulletin TSB-0120-08 covers C0215 on the 2007–2008 Yaris; YarisWorld owners fixed the lights by cleaning and greasing the rear sensor connectors. Read the full answer · Source
DIY or shop?
DIY for cleaning and greasing the connector. Harness or bearing replacement is a moderate job.
Before you replace parts
- Read the ABS codes with a scanner that reads ABS.
- Check the brake fluid level.
- Clean and grease the rear sensor connector.
- Check the harness, then the sensor or bearing, if the code returns.
Safety / mechanic note
Verify with a mechanic. Without ABS the wheels can lock in a hard stop. A code points to a circuit or system, not always a specific part.