Wheel Speed Sensor Circuit Range / Performance Problem (RR Wheel)
Indicates a problem with the rear-right 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 rear-right wheel speed sensor is not sending the correct speed data to the computer, which affects traction control and anti-lock brakes.
What the computer is actually seeing
The computer expects a voltage signal between 0.5V to 5V from the wheel speed sensor while the vehicle is moving. If the voltage is outside this range, it sets the C0238 code.
What a healthy reading looks like
Expected voltage range from the wheel speed sensor is typically between 0.5V to 5V depending on wheel 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.
- 11. Inspect the wiring and connector at the rear-right wheel speed sensor. Look for damage, corrosion, or loose connections. If found, repair the wiring or connector accordingly.
- 22. Measure the voltage at the wheel speed sensor connector while the vehicle is moving. It should be within 0.5V to 5V. If it's not, the sensor may be faulty.
- 33. If the sensor is okay, check other wheel speed sensors. Compare their voltage signals to see if they differ significantly. If they do, the ABS control module may have a fault. Test and possibly replace the module.
Common causes
- Damaged or corroded wheel speed sensor wiring
- Faulty wheel speed sensor
- Issues with the ABS control module
- Bad connector at the wheel speed sensor
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's drivable but fix soon to ensure functional traction control and ABS.
Will this code come back after I clear it?
If the issue isn't resolved, it will likely return after a vehicle operation cycle.
Why does this code appear with other wheel speed sensor codes?
Multiple wheel speed sensor codes can indicate a broader issue with the ABS system or wiring.
Working a real vehicle right now?
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