Wheel Speed Sensor Input (Left Rear) Circuit Range/Performance Problem
This code indicates an issue with the left rear wheel speed sensor circuit.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The left rear wheel speed sensor is sending incorrect data to the computer, which may cause issues with traction control and ABS.
What the computer is actually seeing
The ABS module expects the left rear wheel speed sensor to send a signal that corresponds to the wheel's actual speed. If the signal indicates a speed that's too low or too high compared to other wheels, it triggers this code.
What a healthy reading looks like
Wheel speed sensors should output between 0-12 volts, with a typical reading around 5 volts at rest and varying with speed.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Inspect the wiring and connector for the left rear wheel speed sensor. Look for frays, breaks, or corrosion. Repair as needed and retest.
- 22. Using a multimeter, check the voltage at the connector of the left rear wheel speed sensor with the key in the ON position. You should see a voltage reading between 0-12 volts. If not, there is a circuit issue.
- 33. Remove the left rear wheel and inspect the wheel speed sensor for physical damage or debris that may affect its function. Clean or replace the sensor if necessary.
- 44. If the sensor is good, test the resistance of the sensor using a multimeter; it should be within manufacturer specifications, typically around 1K-2K ohms. If the resistance is out of range, replace the sensor.
- 55. If all sensors check out, scan for any other fault codes that may indicate a problem with the ABS module or other wheel-speed related issues.
Common causes
- Faulty left rear wheel speed sensor
- Broken wire or poor connection in the sensor circuit
- Damaged ABS module
- Brakes binding or excessive wear causing abnormal readings
Typical repair cost
$$
Related codes
Frequently asked questions
Can I still drive the vehicle safely with this code?
Yes, but the ABS and traction control systems may not work properly, which can affect braking performance, especially in slippery conditions.
If I clear the code, will it come back?
If the underlying issue is not fixed, the code will likely return after a drive cycle.
Why does this code pair with other wheel speed sensor codes?
It's common for wheel speed sensor codes to show up together because they may be triggered by a common issue affecting the ABS system or wiring.
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