Powertrain
Definition only
Lights the check engine lamp
P2B7D: EVAP System Pressure Sensor/Switch C Circuit High
Standardized SAE J2012 code · P2Bxx codes
What does P2B7D mean?
The EVAP pressure sensor/switch C reports a circuit high condition. Tank pressure plausibility for leak detection on this branch is impaired.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Symptoms
- Check engine light on
- Possible smell of fuel near tank or engine bay
- Failed emissions inspection
- Loose-cap warning may appear
Common causes
- High Signal wire shorted to B+
- Medium Open pressure 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 P2B7D on the same make and model first.
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