OBD-II code · Network
U068A Lost Communication With Barometric Pressure Sensor C
The vehicle bus reports loss of communication with smart barometric pressure sensor C. Altitude correction for engine fueling and EVAP diagnostics switches to a substitute value.
Is it safe to drive with U068A?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
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
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–1.5 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Baro Sensor C, Vehicle Bus Wiring
Related codes
- U067FLost Communication With Barometric Pressure Sensor A
- U0680Lost Communication With Barometric Pressure Sensor B
- U0687Lost Communication With Catalyst Temperature Bank 2 Sensor 2
- U0688Lost Communication With Throttle Position Sensor/Switch G
- U0689Lost Communication With Turbocharger/Supercharger B Temperature Sensor
- U068BLost Communication With Turbocharger/Supercharger Inlet Pressure Sensor A
- U068CLost Communication With Turbocharger/Supercharger Inlet Pressure Sensor B
- U068DLost Communication With EGR Temperature Sensor A
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.