Wheel Speed Sensor Fault (Right Front)
Right front wheel speed sensor is reporting a fault.
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What it means (plain English)
The right front wheel speed sensor measures how fast the wheel is turning. If it’s faulty, the vehicle can't properly track wheel speed, affecting traction control and ABS functions.
What the computer is actually seeing
The ABS module checks the wheel speed sensors and compares their outputs. If the right front sensor is not sending a signal or has an incorrect voltage, it triggers the code C0045.
What a healthy reading looks like
Normal wheel speed sensor output is between 0.5 to 4 volts AC. When the wheel is stationary, voltage should be close to 0 volts; when moving, it should vary based on speed and be within the specified range.
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 wiring and connector at the right front wheel speed sensor for damage or corrosion.
- 2Measure the voltage output of the right front wheel speed sensor while the wheel is spun (should be 0.5-4 volts AC).
- 3Inspect the sensor for physical damage or mounting issues.
- 4Clear the code and take the vehicle for a test drive to see if the code returns; monitor the output of all wheel speed sensors with a scan tool.
Common causes
- Damaged wheel speed sensor
- Corroded or loose electrical connectors
- Broken wiring harness
- Debris impacting sensor
- Faulty ABS control module
Typical repair cost
$$
Related codes
Frequently asked questions
Can I drive my vehicle with this fault?
Yes, but be cautious as ABS and traction control systems may not function correctly.
Will this code come back after clearing it?
If there's an underlying issue with the sensor or wiring, yes, it will come back.
Why does this code sometimes pair with other wheel speed sensor codes?
This may happen if there’s a common issue affecting multiple sensors, like a wiring problem or ABS module fault.
Working a real vehicle right now?
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