U0336Software Incompatibility With Restraints Control Module
- Generic OBD-II code · Network
- How the car detects it
- The restraints control module reads the crash sensors and triggers airbags and belt tensioners according to a calibration written for one body style and equipment level. U0336 means a connected unit rejects the software or configuration of this module. Ford's 2014 code interpretation lists U0336 without the MIL marker. Jaguar Land Rover shows why the software level matters: replacement RCMs for the Range Rover Evoque came with software older than the factory level, the tester picked its update from the module content instead of the as-built data, and the unit stored B0002-13 until a manual patch fixed the choice (SSM74259). On 2013 Jaguar XJ AWD cars a generic RCM calibration failed FMVSS 208, leading to recall J040. U0151 is lost contact, U0452 invalid data. The airbag lamp stays on.
- What you may notice
- Airbag warning lamp stays on
- Further restraint codes such as airbag circuit faults stored
- Code appears right after airbag module replacement
- Likely causes
- LikelyReplacement airbag module delivered with an older software level and not brought up to the vehicle level
- PossibleCalibration for another body style, drive or equipment loaded
- RareUsed module from another vehicle installed
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €1,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.