Powertrain
Definition only
Lights the check engine lamp
P2CA7: DC/DC Converter Temperature Sensor E Circuit High
Standardized SAE J2012 code · P2Cxx codes
What does P2CA7 mean?
The ECM detects a circuit high fault on the dc/dc converter temperature sensor e circuit. Reading cannot be used reliably for control.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High Signal wire shorted to B+
- Medium Open sensor
- Low Connector pins corroded - high contact resistance
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2CA7 on the same make and model first.
P2CA7 in the community
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