Left Rear Wheel Speed Sensor Circuit
This code indicates a problem 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 either malfunctioning or the circuit connected to it has an issue, which can affect traction control and ABS.
What the computer is actually seeing
The ABS module sees inconsistent or absent signals from the left rear wheel speed sensor, usually resulting in zero speed feedback when the wheel is spinning.
What a healthy reading looks like
Wheel speed should vary between 0 to 50 mph as it rotates, and voltage from the sensor should fluctuate between 0.5V (at rest) and up to 12V (when spinning fast).
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 signs of damage or corrosion. Repair as necessary. Decision point: Is the wiring intact? Yes: Proceed to next step. No: Fix wiring and retest.
- 22. Check the resistance of the left rear wheel speed sensor. Expected resistance should be about 1000 to 1500 ohms. Decision point: Is resistance within spec? Yes: Proceed to next step. No: Replace the sensor.
- 33. Clear the code and take the vehicle for a test drive. Monitor the ABS and traction control systems. Decision point: Does the code return? Yes: Further diagnose the ABS module. No: Repair successful.
Common causes
- Damaged wheel speed sensor
- Corroded connector pins
- Wiring issues in the harness
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's drivable but fix soon due to potential impact on traction control and ABS.
Will this code come back after repairs?
If the issue is properly fixed, it should not return.
Why does this code pair with other wheel speed sensor codes?
Multiple codes can indicate a common issue in the wheel speed circuit affecting several sensors.
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