Error code
OBD2 U0168
OBD2U0168
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Lost Communication With Vehicle Security Control Module.
Severity
moderateCan drive but may experience issues with vehicle security features.
Summary
U0168 indicates lost communication with the Vehicle Security Control Module, which is part of the alarm system control module.
Common Causes
- Faulty or damaged wiring between the security control module and other modules
- Malfunctioning security control module
Fixes
FAQ
How can I diagnose U0168?
Consult a professional mechanic or use diagnostic tools like Torque Pro to check for communication issues between the security control module and other vehicle modules.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More OBD2 codes
- U0100Lost Communication With ECM/PCM A
- U0101Lost Communication with TCM
- U0102Lost Communication with Transfer Case Control Module
- U0103Lost Communication With Gear Shift Module
- U0104Lost Communication With Cruise Control Module
- U0105Lost Communication With Fuel Injector Control Module
- U0106Lost Communication With Glow Plug Control Module
- U0107Lost Communication With Throttle Actuator Control Module
- U0108Lost Communication With Alternative Fuel Control Module
- U0109Lost Communication With Fuel Pump Control Module
- U0110Lost Communication With Drive Motor Control Module
- U0111Lost Communication With Battery Energy Control Module 'A'