Wheel Speed Sensor Rear Left Input Circuit Range/Performance Problem
Indicates a problem with the rear left 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 rear left wheel speed sensor helps determine how fast that wheel is spinning. If there's an issue with the sensor or its wiring, the computer won't get the correct speed signal, potentially affecting stability and traction control systems.
What the computer is actually seeing
The ABS control module monitors inputs from each wheel speed sensor, expecting relative speed values within a specific range to maintain proper vehicle control and stability.
What a healthy reading looks like
Normal voltage signal from the wheel speed sensor should range between 0.5V to 5V depending on vehicle 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.
- 11. Start with a visual inspection of the wiring and connector for the rear left wheel speed sensor. Look for frays, corrosion, or loose connections. If found, repair or replace.
- 22. Measure the voltage at the sensor connector with the ignition on (engine off). Expect 0.5-5V depending on wheel movement. No voltage indicates a wiring or sensor issue.
- 33. If voltage is present, check the resistance of the wheel speed sensor itself. Disconnect the sensor and measure resistance; it should typically be between 1000-2000 ohms. If it's out of spec, replace the sensor.
- 44. If the sensor measures good, test the ABS control module using a scan tool to check for other stored codes or live data readings. If issues persist, module replacement may be necessary.
Common causes
- Damaged wheel speed sensor
- Corroded or damaged wiring harness
- Faulty ABS control module
- Bad wheel bearing affecting sensor position
Typical repair cost
$$
Related codes
Frequently asked questions
Can I drive the vehicle with this code?
Yes, but you may notice issues with traction control or ABS functionality. It's better to address it soon.
Will this code clear itself after repairs?
Yes, it will clear once the issue is resolved and the vehicle is driven through a key-on/engine-off cycle.
Does this code mean I need a new wheel speed sensor?
Not always. It could also be wiring or connector issues, so always start with a thorough inspection.
Working a real vehicle right now?
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