OBD Guide

P2B7B

EVAP System Pressure Sensor/Switch C Circuit Range/Performance

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Check Engine Light Is On
  • Increased fuel consumption
  • Smell of gasoline in the cabin
  • Unstable engine idling

Causes

  • EVAP pressure sensor malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • EVAP system leak

How to Fix

  1. Check the integrity of the wiring to the sensor
  2. Check connections and connector contacts
  3. Test EVAP pressure sensor
  4. Replace sensor if necessary
  5. Check the EVAP system for leaks

Related codes

Error P2B7B by Vehicle Brand