OBD-II code · Powertrain (generic, extended)
P2BBA Engine Coolant Temperature Sensor 6 Circuit Intermittent/Erratic
The ECM detects a circuit intermittent/erratic fault on the engine coolant temperature sensor 6. Reading cannot be used reliably for control.
Is it safe to drive with P2BBA?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor connector not seated
- PossibleNoisy ground reference
- Less likelyConnector with intermittent contact under vibration
Symptoms
- Check engine light on
- Cooling fan runs constantly or not at all
- Cabin heater weak or excessively hot
- Possible long warm-up time or hard cold start
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1.5 h
- Emissions test
- Likely to fail
- Parts involved
- Engine Coolant Temperature Sensor 6, Wiring Harness, Ecm
Related codes
- P01E7Engine Coolant Temperature Sensor 3 Circuit Intermittent/Erratic
- P2BB4Engine Coolant Temperature Sensor 4 Circuit Intermittent/Erratic
- P2BB5Engine Coolant Temperature Sensor 5 Circuit Intermittent/Erratic
- P2BB7Engine Coolant Temperature Sensor 6 Range/Performance
- P2BB8Engine Coolant Temperature Sensor 6 Circuit Low
- P2BB9Engine Coolant Temperature Sensor 6 Circuit High
- P2BBBTurbocharger/Supercharger Bypass Valve A Position Sensor Circuit
- P2BBCTurbocharger/Supercharger Bypass Valve A Position Sensor Circuit Low
- P2BBDTurbocharger/Supercharger Bypass Valve A Position Sensor Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.