U0427Invalid Data Received From Vehicle Security Control Module
- Generic OBD-II code · Network
- How the car detects it
- The vehicle security control module looks after theft protection: alarm, door, bonnet and tailgate monitoring and, with some makers, the key authorisation for the engine. U0427 marks messages from this module that reach a partner but fail its checks. No manufacturer documents U0427 publicly; GM's 2013 bulletin PIP5094 only names it among many codes for which terminal fit comes before circuit tests. Chrysler shows how far the module may reach: bulletin 18-023-13 for the 2012-2013 Grand Voyager 2.8 L diesel names its wireless control module the vehicle security control module in U0168 and treats that code as a sign of a disturbed ignition handshake, cured by PCM software. If it joins the key check, the start may be refused; otherwise alarm or remote locking misbehave. U0168 is lost contact, U0327 software. No MIL is expected.
- What you may notice
- Alarm triggers falsely or cannot be armed
- Remote locking or keyless functions unreliable
- Engine start refused on vehicles where the module joins the key check
- Likely causes
- PossibleSecurity control module faulty or reset during start-up
- PossibleAftermarket alarm or remote start interfering with the module or its supply
- RarePoor terminal fit or corrosion at the module connector
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €60 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.