Software Incompatibility With Park Brake Control Module
What it means
U0317 means the vehicle has detected that the park brake control module — the controller for the electronic parking brake — is running software or a calibration that doesn't match the rest of the network. It usually appears after a module is replaced or reflashed. Normal driving and service braking continue, but a mismatch can stop the parking brake applying or releasing reliably until the correct software is loaded.
Can I keep driving? Usually drivable — driving and normal braking are unaffected, but the electronic parking brake may not apply or release reliably, which can leave you unable to park or move safely.
Common symptoms
What you'll notice
- Parking-brake warning light with a U0317 stored, usually right after a module was replaced or reflashed
- Electronic parking brake won't apply or release, or behaves erratically
- Normal driving and service braking unaffected
- Other communication or brake codes may set alongside it
Common causes
Most likely first
- Park brake control module was replaced with one running a different software/calibration version than the vehicle needsLikely
- Interrupted or incomplete software update (reflash) of the moduleCommon
- Wrong part fitted — module part number does not match this vehicle or trimCommon
- Module installed but never programmed/configured with the vehicle's as-built dataLess often
- Software corruption within the moduleLess often
How to diagnose & fix
Work through it in order
- Scan all modules and confirm the code targets the park brake control module; note its software and calibration part numbers.
- Verify the installed module is the correct part number for this VIN.
- Reprogram/reflash the module to the correct current software with an OEM-capable scan tool.
- Complete module configuration (write as-built/VIN data) after flashing.
- If a used or aftermarket module cannot be matched, fit the correct part and program it. Clear codes and confirm all modules report compatible versions.
FAQ
Quick answers
Is it safe to drive with U0317?+
Can I just clear U0317?+
Related codes
Often seen with U0317
Read & clear U0317 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.