Powertrain Definition only Lights the check engine lamp

P2B7E: EVAP System Pressure Sensor/Switch C Circuit Intermittent

Standardized SAE J2012 code · P2Bxx codes

What does P2B7E mean?

The EVAP pressure sensor/switch C reports a circuit intermittent 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 connector not seated
  • Medium Noisy ground reference
  • Low Connector with intermittent contact under vibration

Likelihood is a general estimate across vehicles; your make and model may differ.

Add your car to see reports of P2B7E on the same make and model first.

P2B7E in the community

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