Wheel Speed Sensor Fault - Rear Left
There’s a problem with the rear left wheel speed sensor or 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 monitors each wheel’s speed through sensors; if the rear left sensor gives inconsistent data or drops out, it triggers this code.
What the computer is actually seeing
The wheel speed sensor should provide a consistent voltage and signal wave. If it reads below 0.5 volts or behaves irregularly (e.g., suddenly dropouts), the system flags this code.
What a healthy reading looks like
The rear left wheel speed sensor should output around 0.5 to 5 volts under normal conditions; the signal frequency should vary as speed changes (e.g., 2-20 Hz at low 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.
- 1Check the wiring and connector for the rear left wheel speed sensor for damage or corrosion.
- 2Inspect the sensor itself for physical damage or dirt blocking it.
- 3Using a multimeter, check the voltage output of the sensor; it should be between 0.5 to 5 volts when spinning the wheel.
- 4If the sensor output is normal, check for any stored ABS faults or issues with the ABS control module.
Common causes
- Faulty rear left wheel speed sensor
- Damaged wiring or connector to the sensor
- Corrosion on sensor connector
- Faulty ABS module
- Wheel bearing issues
Typical repair cost
$$
Related codes
Frequently asked questions
Can I still drive the vehicle with this code?
Yes, but be cautious; ABS may not function, increasing the risk of loss of control during braking.
Will this code come back after I clear it?
It can come back if the underlying issue isn't resolved, such as a faulty sensor or wiring issues.
Why does this code pair with other wheel speed sensor codes?
Because the ABS system relies on inputs from all wheel speed sensors to operate correctly; a fault in one can affect the whole system.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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