U0317 code meaning
Software Incompatibility With Park Brake Control Module
What U0317 means
U0317 tells that the park brake control module of an electric parking brake runs software or a calibration another module does not accept. Following GM's generic U03xx logic it is checked at 9-16 V with normal bus traffic, sets when a module is not configured properly and needs no wiring test; the cure is setup or programming. No manufacturer documents this J2012 meaning publicly. Mitsubishi reassigns the number: for the 2017 Outlander (TSB-17-23-001) U0317 stands for a CAN time-out with the EPB ECU, which a wrongly programmed TCM stored as P0317 instead; a TCM reflash corrects it. On such vehicles read U0317 as a communication fault. U0128 means lost contact, U0417 invalid data. Park brake warnings or disabled auto functions are possible; no MIL.
U0317 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyWorkshop only
- Typical labor0.5 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0317
- Park brake warning light or message
- Automatic release or hill hold not working
- Code appears after park brake module work
Common causes of U0317
- Most likelyPark brake module replaced or flashed without setup
- PossibleMitsubishi: CAN time-out to the EPB ECU, e.g. connector unplugged
- Less likelySoftware level of park brake module and partner module do not match
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Park brake moduleControl module software
What each part of U0317 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 17 | The exact fault in that area. |
What to do next
- Note U0317 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about U0317
What does U0317 mean?
U0317 means "Software Incompatibility With Park Brake Control Module". U0317 tells that the park brake control module of an electric parking brake runs software or a calibration another module does not accept. It is a generic code, so it means the same on every make.
Is it safe to drive with U0317?
U0317 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will U0317 fail an emissions test?
U0317 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is U0317 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 2 hours of work. This is a job for a workshop.
Will U0317 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.