Powertrain
generic / SAE
P0ECA
A/C Refrigerant Temperature Sensor B Circuit Low
The ECM detects a low fault on the a/c refrigerant temperature sensor b circuit. Reading cannot be used reliably for control.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberE / CA
Possible causes
- Signal wire shorted to ground high
- Internal sensor short medium
- Connector pins corroded - high contact resistance low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 200–1500 €
- Estimated time: 1–5 h
- Component: ac refrigerant temp sensor b
- Component: wiring harness
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012