OBD-II code · Powertrain (generic)
P06AC Control Module Internal Temperature Sensor B Range or Performance
Same as P0667 on internal sensor B.
Is it safe to drive with P06AC?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelySensor element drifted
Symptoms
- Check engine light on
- Possible limp mode or no-start
- Multiple follow-up faults across modules
- Reset/relearn may be needed after repair
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–6 h
- Emissions test
- Usually unaffected
- Parts involved
- Ecu Internal Temperature Sensor B
Related codes
- P0667Control Module Internal Temperature Sensor A Range or Performance
- P06A9Sensor Reference Voltage D Circuit Range or Performance
- P06AAControl Module Internal Temperature B Too High
- P06ABControl Module Internal Temperature Sensor B Circuit
- P06ADControl Module Internal Temperature Sensor B Circuit Low
- P06AEControl Module Internal Temperature Sensor B Circuit High
- P06AFTorque Management System Forced Engine Shutdown
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.