OBD-II code · Network
U02A6 Lost Communication With Safety Integration Control Module
The vehicle bus reports loss of communication with the safety integration module that arbitrates between ADAS, restraint, brake and steering systems. Cross-system safety functions may be inhibited.
Is it safe to drive with U02A6?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyBus wiring open or shorted
- PossibleModule without power or ground
- PossibleModule failed
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–5 h
- Emissions test
- Usually unaffected
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Safety Integration Module, Vehicle Bus Wiring
Related codes
- U02A3Lost Communication With Particulate Matter Sensor
- U02A4Lost Communication With NH3 Sensor
- U02A5Lost Communication With Reductant Heater Control Module
- U02A7Lost Communication With Engine Sound Control 1
- U02A8Lost Communication With Engine Sound Control 2
- U02A9Lost Communication With Charge Air Cooler Coolant Pump A
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.