Wheel Speed Sensor Rear Left Input Signal Range/Performance Problem
There’s an issue with the rear left wheel speed sensor's signal quality.
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 rear left wheel speed sensor is supposed to send accurate speed data to the computer. If it's sending strange data, the computer flags it as a problem, which can affect things like traction control or ABS functioning.
What the computer is actually seeing
The ABS module expects the wheel speed sensor to deliver a voltage signal that corresponds to wheel rotation. If it sees a voltage outside the usual range (0.5V - 4.5V at idle), it triggers a code.
What a healthy reading looks like
Normal range is about 0.5V to 4.5V when the wheel is turning, depending on speed; at a standstill, it should be near 0V and rise as the wheel rotates.
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. Check wiring and connectors at the rear left wheel speed sensor for damage or corrosion. Repair as needed. Decision Point: Is wiring intact? If yes, go to step 2; if no, fix wiring and retest.
- 22. Measure the voltage at the wheel speed sensor with the wheel turning. You should see a signal between 0.5V and 4.5V. Decision Point: Is the voltage within range? If yes, go to step 3; if no, replace the wheel speed sensor.
- 33. Inspect for debris around the sensor. Clean any dirt or metallic particles. Decision Point: Is it clean? If yes, test drive and monitor; if no, clean and retest.
Common causes
- Damaged or corroded wiring between the sensor and the ABS module
- Faulty wheel speed sensor
- Debris in the sensor area
- Brake system issues affecting sensor input
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
It's best to fix it soon as it can affect ABS and traction control, but if you're careful, it may be drivable.
Will the issue come back if I clear the code?
Potentially, if the underlying problem isn't fixed, the code will likely return.
Why does this code pair with other wheel speed sensor codes?
Because the wheel speed sensor data is crucial for several systems; if one sensor fails or shows a performance issue, it often affects others.
Working a real vehicle right now?
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