Code C0517 indicates a correlation error between the right rear wheel speed sensor signal and the signals from other wheel speed sensors or the vehicle's reference speed. This typically means the sensor output is out of expected range or inconsistent, often due to a faulty sensor, damaged tone ring, or wiring issue.
The sensor itself is the most common failure point, often due to internal electronic failure, contamination, or physical damage.
The tone ring (reluctor ring) on the wheel hub or axle may be cracked, missing teeth, or covered with debris, causing an erratic signal.
Corrosion, broken wires, or poor connections in the sensor circuit can cause intermittent or incorrect signal correlation.
If the sensor is not properly seated or the hub bearing has excessive play, the air gap may be too large or too small, affecting signal strength.
Rarely, the ABS module may misinterpret sensor data due to internal failure, but this is far less common than sensor or wiring issues.
Extremely unlikely; the PCM is almost never the cause of a wheel speed sensor correlation code. Only consider this after all other possibilities have been thoroughly ruled out.
You can usually drive short distances, but the ABS and traction control systems will be disabled. Braking without ABS may be less effective in slippery conditions. Have the issue diagnosed promptly.
No. The PCM is almost never the cause of a wheel speed sensor correlation code. Replacing it is rarely necessary and often a misdiagnosis. Focus on the sensor, wiring, and tone ring first.
Costs vary widely depending on the root cause. A sensor replacement is typically moderate, while wiring repairs or tone ring replacement can be more labor-intensive. Get a diagnosis from a qualified technician for an accurate estimate.
The code may clear if the condition becomes intermittent, but it will likely return if the underlying problem is not fixed. A permanent repair is recommended.