Wheel Speed Sensor Circuit Failure - Left Rear
There is a fault in 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 computer isn't getting a good signal from the left rear wheel speed sensor, which helps it know how fast that wheel is turning.
What the computer is actually seeing
The brake control module expects a voltage signal from the left rear wheel speed sensor between 0.5 and 5.0 volts while the vehicle is moving. If the signal drops below 0.2 volts or is completely absent, it flags a fault.
What a healthy reading looks like
Voltage signal should be between 0.5-5.0V while the vehicle is in motion; ideally, it should match the speeds seen from the other three wheel sensors.
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.
- 1Check the wiring harness for any visible damage or loose connections at the left rear wheel speed sensor.
- 2Inspect the connector for corrosion or dirt; clean if needed.
- 3Test the voltage at the left rear wheel speed sensor connector with the vehicle in motion; should be 0.5-5.0V during operation.
- 4If the voltage is out of range, replace the left rear wheel speed sensor and retest.
- 5If the voltage is correct, check the related wiring to the brake control module for opens or shorts.
Common causes
- Damaged left rear wheel speed sensor
- Open or shorted wiring in the sensor circuit
- Faulty brake control module
- Poor connection at the sensor or module
- Corrosion at the connector
Typical repair cost
$$-$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's drivable but fix soon; the ABS may not work properly.
Will the code come back after clearing?
If the issue isn't fixed, it likely will return.
Why does this code pair with other codes?
Other codes can indicate faults in related systems or sensors that also affect wheel speed readings.
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