OBD-II code · Powertrain (generic)
P06AA Control Module Internal Temperature B Too High
Control Module Internal Temperature B Too High: the control module has detected this fault condition.
Is it safe to drive with P06AA?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyHeat soak around ECU
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
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Ecm
Related codes
- P0634Control Module Internal Temperature A Too High
- P06A7Sensor Reference Voltage B Circuit Range or Performance
- P06A8Sensor Reference Voltage C Circuit Range or Performance
- P06A9Sensor Reference Voltage D Circuit Range or Performance
- P06ABControl Module Internal Temperature Sensor B Circuit
- P06ACControl Module Internal Temperature Sensor B Range or Performance
- P06ADControl Module Internal Temperature Sensor B Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.