Powertrain
Definition only
Lights the check engine lamp
P2B7B: EVAP System Pressure Sensor/Switch C Circuit Range/Performance
Standardized SAE J2012 code · P2Bxx codes
What does P2B7B mean?
The EVAP pressure sensor/switch C reports a circuit range/performance 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 Sensor zero drifted
- Medium Sensor port restricted
- Low Sensor element aged beyond calibration window
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2B7B on the same make and model first.
P2B7B in the community
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