Rough Road Hardware Not Present
What does P0317 mean?
The P0317 code means the vehicle's onboard diagnostic system has detected: Rough Road Hardware Not Present. This is a low severity code.
Common Symptoms
- Check Engine Light illuminated
- False misfire codes may be stored
- No drivability symptoms usually present
- Traction control or ABS light may be on
- Intermittent misfire codes on rough roads
Probable Causes (Ranked by Likelihood)
- ABS module not communicating with PCM (missing rough road signal) Very High
- Faulty wheel speed sensor preventing rough road detection High
- CAN bus communication error between ABS and PCM High
- ABS module failure or unprogrammed replacement module Moderate
- Aftermarket wheel or tire installation causing sensor issues Low
Step-by-Step Diagnostic Procedure
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Check for ABS or wheel speed sensor codes stored alongside P0317
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Verify the ABS module is communicating on the CAN bus network using a scan tool
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Inspect all wheel speed sensor connections and wiring for damage
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If the ABS module was recently replaced, confirm it was properly programmed for the vehicle
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Check for CAN bus communication codes (U-codes) that may indicate a network problem
Frequently Asked Questions
Can I drive with code P0317?
Yes. This code typically does not affect drivability. However, without the rough road signal, the PCM may log false misfire codes when driving on rough or uneven surfaces.
What is the rough road detection system?
The PCM uses data from the ABS wheel speed sensors to detect when the vehicle is on a rough road. This prevents the crankshaft speed variations caused by rough terrain from being misidentified as engine misfires.
Why does this code appear after ABS repairs?
If the ABS module is replaced or disconnected, the rough road signal may no longer be sent to the PCM. The replacement module must be properly configured and the communication link verified.