Code result
P2B7B
EVAP System Pressure Sensor/Switch C Circuit Range/Performance
Moderate severity
What it means
The EVAP pressure sensor/switch C reports a circuit range/performance condition. Tank pressure plausibility for leak detection on this branch is impaired.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Sensor zero drifted
highOne of the most commonly reported causes for this code — check this first.
Sensor port restricted
mediumA plausible cause — test and verify before replacing parts.
Sensor element aged beyond calibration window
lowLess common, but worth ruling out after the more likely causes.
Related help
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