OBD-II code · Powertrain (generic, extended)
P2B7A EVAP System Pressure Sensor/Switch C Circuit
The EVAP pressure sensor/switch C reports a circuit condition. Tank pressure plausibility for leak detection on this branch is impaired.
Is it safe to drive with P2B7A?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyPressure sensor C failed
- PossibleWiring or connector fault
Symptoms
- Check engine light on
- Possible smell of fuel near tank or engine bay
- Failed emissions inspection
- Loose-cap warning may appear
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1.5 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Evap Pressure Sensor C, Wiring Harness, Ecm
Related codes
- P0450EVAP System Pressure Sensor/Switch A Circuit
- P2B77Coolant Heater B Control Circuit Low
- P2B78Coolant Heater B Control Circuit High
- P2B79Coolant Heater B Control Circuit Performance
- P2B7BEVAP System Pressure Sensor/Switch C Circuit Range/Performance
- P2B7CEVAP System Pressure Sensor/Switch C Circuit Low
- P2B7DEVAP System Pressure Sensor/Switch C Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.