OBD-II code · Network
U0161 Lost Communication with Compass Module
The Compass Module has stopped transmitting on the vehicle data bus, so other control units no longer receive its messages. The compass and heading display loses its data. Typical causes are loss of power or ground at the module, an open or shorted CAN/LIN bus wire, a connector fault, or an internal module failure.
Is it safe to drive with U0161?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyCompass module unpowered
- PossibleCAN wiring to compass module broken
- Less likelyGateway module routing CAN messages incorrectly
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
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–2 h
- Emissions test
- Usually unaffected
- Parts involved
- Compass Module, Can Bus Wiring
Related codes
- U015ELost Communication With Automated Driving System Interface Module A
- U015FLost Communication With Automated Driving System Interface Module B
- U0160Lost Communication with Audible Alert Control Module
- U0162Lost Communication with Navigation Display Module
- U0163Lost Communication with Navigation Control Module
- U0164Lost Communication with HVAC Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.