Wheel Speed Sensor Circuit High Input (Left Front)
Indicates a problem with the left front 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 front wheel speed sensor is sending a voltage signal that's too high, which could indicate a short circuit or a malfunctioning sensor.
What the computer is actually seeing
The vehicle's computer expects a voltage signal between 0.5V to 5V from the sensor. A reading above 5V usually indicates an issue in the circuit.
What a healthy reading looks like
Normal operation should see wheel speed sensor voltages fluctuating between 0.5V and 5V, correlating with 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. Visually inspect the left front wheel speed sensor and wiring for damage or corrosion. Decision Point: If found, repair or replace, then retest.
- 22. Check the connector for the left front wheel speed sensor for corrosion and secure connection. Decision Point: Clean or repair, then retest.
- 33. Using a multimeter, measure the voltage at the connector while manually rotating the wheel. You should see a voltage signal. Decision Point: If over 5V, replace the sensor. If within range, check wiring continuity back to the ABS module.
- 44. Inspect the ABS module for any error codes or issues if the sensor and wiring are good. Decision Point: If no issues, further diagnose ABS module.
Common causes
- Damaged wheel speed sensor
- Corroded or damaged wiring harness
- Poor electrical connection at the connector
- Faulty ABS module
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's not recommended to drive as it affects your ABS and traction control systems. Fix as soon as possible.
If I clear the code, will it come back?
If the underlying issue isn't fixed, yes, the code will likely return.
What happens if I ignore this code?
Ignoring it could lead to poor traction control and ABS functionality, increasing the risk of accidents.
Working a real vehicle right now?
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