Left Rear Wheel Speed Sensor Circuit Range/Performance
Issues detected in left rear wheel speed sensor readings.
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What it means (plain English)
The left rear wheel speed sensor sends a signal to the ABS module, which can fail or give inconsistent readings, especially if the wheel is spinning slower than expected compared to the other wheels.
What the computer is actually seeing
The ABS system monitors wheel speed sensors. If the left rear sensor shows a much lower voltage (below 0.5 volts) or fails to match the speed of the other wheels within 5-10% during normal operation, this code can trigger.
What a healthy reading looks like
Normal operating voltage for wheel speed sensors is typically between 0.5V and 2.5V at rest and should vary depending on vehicle speed during movement.
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 left rear wheel speed sensor wiring and connectors for damage, corrosion, or loose connections. Decision: If damaged, repair or replace as needed.
- 22. Measure the voltage at the left rear wheel speed sensor connector with the key on (engine off). Expected voltage should be between 0.5V and 2.5V. Decision: If out of range, replace the sensor.
- 33. Test the wheel speed sensor's output while the vehicle is in motion to ensure it is sending a valid signal that corresponds with the other wheel sensors. Decision: If the sensor fails this test, replace it.
- 44. Check the ABS control module for any updates or faults that might affect sensor reading. Decision: If other codes are present indicating a module fault, consider further diagnostics or replacement of the module.
Common causes
- Damaged wiring or connectors for the left rear wheel speed sensor.
- Faulty left rear wheel speed sensor itself.
- Bad ABS control module.
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's generally drivable, but ABS may be impaired, affecting braking stability. Get it checked soon.
Will this code come back after clearing it?
If the underlying issue isn't fixed, yes, it will likely return.
Why does this code sometimes pair with others?
Multiple wheel speed-related codes can indicate a broader issue with the ABS system or multiple sensors.
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