OBD-II code · Network
U069D Lost Communication With Exhaust Gas Temperature Sensor Bank 2 Sensor 4
The vehicle bus reports loss of communication with smart exhaust gas temperature sensor bank 2 sensor 4. Catalyst protection and DPF regeneration logic switch to model-based estimates.
Is it safe to drive with U069D?
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
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Egt Sensor Bank 2 Sensor 4, Vehicle Bus Wiring
Related codes
- U061FLost Communication With Exhaust Gas Temperature Sensor Bank 1 Sensor 1
- U0620Lost Communication With Exhaust Gas Temperature Sensor Bank 1 Sensor 2
- U0621Lost Communication With Exhaust Gas Temperature Sensor Bank 2 Sensor 1
- U0622Lost Communication With Exhaust Gas Temperature Sensor Bank 2 Sensor 2
- U069ALost Communication With Exhaust Gas Temperature Sensor Bank 1 Sensor 3
- U069BLost Communication With Exhaust Gas Temperature Sensor Bank 1 Sensor 4
- U069CLost Communication With Exhaust Gas Temperature Sensor Bank 2 Sensor 3
- U069ELost Communication With Coolant Heater A
- U069FLost Communication With Exhaust Pressure Sensor C
- U0901Invalid Data from Ion Sense Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.