The driver circuit for the right front wheel speed sensor is malfunctioning.
Right front wheel speed sensor circuit issue detected.
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 computer is noticing that the signal from the right front wheel speed sensor isn't working right, which means it's not detecting how fast that wheel is turning accurately.
What the computer is actually seeing
The ABS module expects a voltage signal from the wheel speed sensor that varies from 0 to 5 volts as the wheel turns. If it gets a constant voltage (like 0V or 12V) or no signal at all, it'll trigger the C0242 code.
What a healthy reading looks like
0 to 5 volts while the vehicle is moving; typical frequency should vary with speed, generally around 1.0 Hz to 10.0 Hz at low speeds.
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.
- 1Check the right front wheel speed sensor wiring for damage or loose connections. Repair as needed.
- 2Inspect the wheel speed sensor connector for corrosion or dirt. Clean or replace if necessary.
- 3Measure the voltage at the right front wheel speed sensor connector with the vehicle in motion. It should vary between 0 and 5 volts. If it’s steady or outside this range, the sensor is likely bad.
- 4If the sensor readings are correct, test the ABS control module for faults or wiring issues between the module and the sensor.
Common causes
- Damaged wiring or connector at the right front wheel speed sensor
- Faulty wheel speed sensor
- Corrosion or debris at the sensor or connector
- Faulty ABS control module
Typical repair cost
$$
Related codes
Frequently asked questions
Can I drive with this code?
Yes, but be cautious; you may experience ABS or traction control issues.
Will this code come back after I clear it?
If the underlying issue is not fixed, yes, it will return.
Why does this code pair with code C0240?
C0240 also relates to wheel speed sensor issues, typically for a different wheel.
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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