P0317
Rough Road Hardware Not Present
Misfire monitoring / configuration
Generic OBD-II
Low
What it means
P0317 means the engine computer's misfire monitor expects rough-road data — used to tell a real misfire apart from crank-speed changes caused by potholes — but that hardware or data isn't present. It's usually a configuration, calibration, or wiring issue rather than an engine fault, so the car typically drives normally.
Low
Can I keep driving? Fine to drive — this is a diagnostic/configuration code and does not by itself affect how the engine runs.
Common symptoms
What you'll notice
- Check-engine light on
- Often no noticeable change in how the car drives
- Misfire monitor may be disabled or report inconsistently
Common causes
Most likely first
- PCM configured to expect a rough-road (G) sensor the vehicle doesn't have — programming or calibration mismatchLikely
- Rough-road sensor missing, unplugged, or its data not reaching the PCMCommon
- Loss of ABS / wheel-speed data on the bus that the PCM uses to detect rough roadCommon
- Wiring or connector fault in the rough-road sensor circuitLess often
How to diagnose & fix
Work through it in order
- Confirm the correct calibration/software is loaded for this vehicle — a mismatch after a module swap or reflash is a common trigger.
- Check whether the vehicle is equipped with a rough-road sensor and that it is connected.
- Verify ABS/wheel-speed data is present on the network (no related ABS codes).
- Inspect the sensor wiring and connectors, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0317?+
Yes. It relates to how the computer filters out road-bump-induced misfire readings, not to a mechanical fault.
Can I just clear P0317?+
It will return if the configuration mismatch or missing sensor data remains. Fix the underlying cause first.
Related codes
Read & clear P0317 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX