ABS Wheel Speed Sensor Circuit Malfunction (Left Front)
There’s a problem with the left front ABS 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 ABS system is trying to read the speed of your left front wheel, but it’s not getting a proper signal from the sensor. This could be due to a wiring issue, a bad sensor, or a connector problem.
What the computer is actually seeing
The ABS control module expects a voltage reading between 0 and 5 volts from the wheel speed sensor. If the voltage drops below 0.5 volts or above 4.5 volts when the vehicle is moving, it throws this code.
What a healthy reading looks like
0-5 volts from the wheel speed sensor; ideally, you should see 2-3 volts while driving.
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.
- 1Visually inspect the left front wheel speed sensor and wiring for damage or disconnection.
- 2Check the connector terminal for corrosion or loose connection.
- 3Measure the voltage at the ABS wheel speed sensor while the vehicle is moving; you should see a reading of 2-3 volts.
- 4If voltage readings are out of range, replace the ABS wheel speed sensor and retest.
- 5If the sensor is good, inspect the wiring harness for continuity and shorts to ground.
Common causes
- Faulty left front ABS wheel speed sensor
- Damaged wiring or connector issues
- Corrosion in sensor or connector
- Wheel bearing failure affecting sensor operation
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's moderate severity; your ABS might not function properly, but you can still drive. Fix it soon.
Will this code come back after clearing it?
If the underlying issue isn't fixed, it will likely return.
Why is this code paired with other ABS codes?
ABS codes often trigger together due to shared components or failures in the system's circuit.
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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