OBD-II code · Powertrain (generic)
P0ECC A/C Refrigerant Temperature Sensor B Circuit Intermittent/Erratic
The ECM detects a intermittent/erratic fault on the a/c refrigerant temperature sensor b circuit. Reading cannot be used reliably for control.
Is it safe to drive with P0ECC?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySensor connector not seated
- PossibleNoisy ground reference
- Less likelyConnector with intermittent contact under vibration
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–5 h
- Emissions test
- Usually unaffected
- Parts involved
- AC Refrigerant Temp Sensor B, Wiring Harness
Related codes
- P0EC7A/C Refrigerant Temperature Sensor A Circuit Intermittent/Erratic
- P0EC9A/C Refrigerant Temperature Sensor B Circuit Range/Performance
- P0ECAA/C Refrigerant Temperature Sensor B Circuit Low
- P0ECBA/C Refrigerant Temperature Sensor B Circuit High
- P0ECDA/C Refrigerant Distribution Valve A Control Circuit/Open
- P0ECEA/C Refrigerant Distribution Valve A Control Circuit Low
- P0ECFA/C Refrigerant Distribution Valve A Control Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.