U0327Software Incompatibility With Vehicle Security Control Module
- Generic OBD-II code · Network
- How the car detects it
- The vehicle security control module handles theft protection: alarm, monitoring of doors, bonnet and tailgate and, at some makers, the key check that unlocks the engine. Chrysler, for example, gives this job to its wireless control module, and its lost-contact code U0168 calls that unit the vehicle security control module (18-023-13). U0327 means another controller finds the software of this module unsuitable, typically after a replacement, a used part or an update of only one side. No manufacturer documents U0327 publicly. Where the security module also performs the key check, the engine controller withholds release and the car will not start; elsewhere the alarm, remote locking or panic function misbehaves. U0326 covers a separate immobilizer module, U0168 lost contact and U0427 invalid data. No MIL is expected.
- What you may notice
- No start or start refused although the key is accepted at the door
- Alarm triggers without reason or cannot be armed
- Security lamp flashing, remote locking unreliable
- Likely causes
- LikelySecurity or wireless control module replaced without programming and key learning
- PossibleEngine or body controller updated while the security module kept old software
- RareAftermarket alarm or remote start interfering with the security data
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €80 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.