Wheel Speed Sensor Malfunction
Indicates a failure in the wheel speed sensor or 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 wheel speed sensor monitors how fast each wheel is spinning. If the sensor is damaged or the wiring is faulty, the computer can't get accurate speed data, leading to issues with traction control or ABS.
What the computer is actually seeing
The computer looks for specific voltage or frequency signals from the wheel speed sensor typically around 0-5 volts. If it sees no signal or out of range values, it triggers the C1320 code.
What a healthy reading looks like
Normal wheel speed sensor values should show a frequency of 6-20 Hz at low speeds and increase with wheel speed; the voltage output should be close to 0.5-3 volts when in motion.
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 at the wheel speed sensor for damage or corrosion. If found, repair or replace as necessary. Decision: If wiring is good, proceed to step 2.
- 22. Measure the voltage at the wheel speed sensor connector with the vehicle in motion. Expected value is 0.5-3 volts. Decision: If voltage is within range, the sensor may be faulty, proceed to step 3.
- 33. Swap the wheel speed sensor with one from another wheel (if possible) or replace it. Test drive to see if the code returns. Decision: If code is gone, new sensor fixed the issue; if code returns, suspect the ABS module.
Common causes
- Faulty wheel speed sensor
- Damaged wiring or connectors
- Corrosion in connector terminals
- ABS control module fault
- Signal interference from nearby electronics
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with code C1320?
It's moderately safe but you may experience issues with traction control or ABS on slippery surfaces. Fix it soon.
Will the code come back after clearing it?
If the underlying issue isn't resolved, like a faulty sensor or wiring, yes, it will likely return.
Why is this code showing up with other codes?
C1320 may pair with other codes related to ABS or traction control systems due to shared components.
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