Front Left Wheel Speed Sensor Circuit Failure
The control module detects a fault in the front 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)
Your vehicle's computer can't get a reliable speed reading from the front left wheel. This could cause issues with ABS and traction control.
What the computer is actually seeing
The ABS or traction control module is not receiving expected signals from the front left wheel speed sensor, which should be between 0 and 5 volts depending on wheel speed.
What a healthy reading looks like
Wheel speed sensors typically output a voltage signal that varies from 0 to about 5 volts as the wheel rotates; at a stop, it should be near 0 volts.
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. Inspect the wiring and connector for the front left wheel speed sensor for any obvious damage or corrosion.
- 22. Disconnect the wheel speed sensor connector and check for continuity in the wiring harness. You should see continuity between the sensor and the module.
- 33. With the sensor connected, use a multimeter to measure the voltage output while rotating the wheel. You should read between 0 to 5 volts as the wheel spins. If no voltage or low voltage is detected, replace the sensor.
- 44. If the sensor tests good, check the ABS control module for DTCs and inspect the ABS module power and ground circuits.
Common causes
- Damaged wiring or connectors to the wheel speed sensor
- Faulty wheel speed sensor
- Corrosion or dirt in the sensor connector
- ABS module malfunction
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's not ideal to drive with this code since it affects ABS and traction control, but the vehicle is drivable in most cases. Drive cautiously.
Will the code come back after clearing?
If the underlying issue isn't resolved, yes, the code will likely return after clearing the codes and driving the vehicle.
Why does this code show up with a C1113 or C1116?
These codes are related to wheel speed sensors; if the front left is faulty, others may be affected as well.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
Start guided diagnostic →