Left Front Wheel Speed Sensor Circuit
This code indicates an issue 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 measures the wheel's speed and sends that data to the ABS module. If there's a problem, like a broken wire or a bad sensor, the ABS can't function properly, which could affect braking.
What the computer is actually seeing
The ABS control module expects to see a voltage signal from the wheel speed sensor between 0 and 5 volts. If the signal is nonexistent (0V) or outside normal limits, it triggers this code.
What a healthy reading looks like
The left front wheel speed sensor should produce a voltage between 0.5V to 4.5V while the vehicle is moving, corresponding to its 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.
- 1Inspect the left front wheel speed sensor wiring and connectors for damage or corrosion.
- 2Check the sensor's resistance; it should be around 1,000 to 2,000 ohms. If it's infinite or too low, the sensor is bad.
- 3Use a multimeter to monitor the sensor's voltage while the vehicle is moving; if the voltage stays at 0V, replace the sensor.
- 4If the sensor is good, check the wiring between the sensor and the ABS module for continuity. Repair any breaks or shorts found.
Common causes
- Damaged wheel speed sensor
- Corroded or damaged wiring
- Poor sensor connector connection
- Faulty ABS control module
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code present?
It's possible but not recommended as it affects ABS performance and can increase stopping distances.
Will this code come back after clearing it?
If the underlying issue isn't fixed, it will likely return after a drive cycle.
Why does this code pair with other wheel speed sensor codes?
Multiple codes indicate issues in similar circuits; if one sensor fails, it may cause others to report faults due to shared wiring or control module issues.
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