Code
U0317
HYUNDAI
U — Network/User
Software Incompatibility with Park Brake Control Module
Views:
UK: 9
EN: 19
RU: 9
AI status
Completed
Completed
100%
Causes
- Module reprogramming incomplete or interrupted
- Incorrect/older/newer software/calibration applied to the park brake module
- Replacement module with incompatible software or part number
- Corrupted firmware or failed update
- CAN bus communication errors or bus termination problems
- Battery/low-voltage condition during programming
Symptoms
- Park brake unavailable, inoperative, or stuck in a fault mode
- Parking brake warning light or EPB lamp on instrument cluster
- Related warnings or reduced functionality for ABS/ESC/traction systems
- Diagnostic tool shows U0317 and possibly other communication codes
- Failed software update attempts or inability to program the module
- Intermittent park brake operation or unexpected release/apply
What to check
- Retrieve all stored and pending DTCs and any freeze-frame data with a capable OEM-level scanner
- Record park brake module software part number, calibration ID, and hardware part number
- Compare module SW/HW IDs to vehicle build data and OEM compatibility tables
- Check battery voltage (should be stable and within OEM spec) and charging system before programming
- Inspect connectors and wiring at the park brake module for corrosion, bent pins, or damage
- Scan for other network communication codes (U0100, U0155, etc.) that indicate bus-wide issues
Signal parameters
- Park Brake Module SW Part Number / Calibration ID (e.g., SW/CAL ID shown by scan tool)
- Park Brake Module Hardware Part Number
- Module CAN ID / address and bus (e.g., CAN1/500 kbps or CAN2/250 kbps)
- TX/RX message activity and message contents for park-brake PID
- Bus voltage during operation and programming (expected ~11–14.5 V)
- Module wake/sleep state and ignition status when messages are expected
Diagnostic algorithm
- Use an OEM-capable scan tool: read and save U0317 and any related DTCs/ freeze frame data. Note module SW/HW IDs.
- Check battery state-of-charge and system voltage. Recharge or maintain battery with a suitable power supply if below OEM threshold.
- Inspect park brake module connectors and wiring for damage, water ingress, corrosion, or poor pin contact. Repair any issues found.
- Verify CAN bus integrity: check termination resistance, measure activity with a scope or diagnostic tool, and confirm no bus-short conditions.
- Compare the module's software and hardware part numbers with OEM build data and the vehicle’s parts catalog to confirm compatibility.
- Review service history and TSBs for known software compatibility issues or required update procedures for this VIN/model.
- Attempt to reflash/reprogram the park brake module using the correct OEM software/calibration and follow manufacturer reflash procedure (ensure stable 12 V supply and no interruptions).
- If reprogramming is successful, clear codes and perform a relearn/coding procedure as required by OEM. Cycle ignition and operate the park brake to verify function.
- If programming fails or U0317 returns, try programming with a known-good module software image or perform a module reset per OEM instructions.
- If incompatibility persists after correct programming and wiring checks, consider replacement with the correct part number then program and code to vehicle. Confirm operation and clear codes.
- Document results. If unresolved, escalate to OEM technical support with logs, scanner dumps, and reflash failure details.
Likely causes
- Module was replaced or reprogrammed with wrong software/calibration
- Reflash failed or was interrupted (power loss, low battery)
- Vehicle received an update not compatible with that module hardware
- Module coding/vehicle configuration mismatch after service
- CAN network errors preventing the module version check
Fault status
Status
U0317 — Software Incompatibility with Park Brake Control Module: The park brake control module software or calibration does not match the vehicle's expected version; communication or functionality may be impaired.
Repair difficulty: Medium
Diagnostic time: 1-3 hours
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