OBD Guide

P2B7A

EVAP System Pressure Sensor/Switch C Circuit

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

Symptoms

  • Check Engine light comes on
  • Increased fuel consumption
  • Smell of gasoline in the cabin
  • Unstable engine idling

Causes

  • EVAP system pressure sensor malfunction
  • Open or short circuit in the sensor circuit
  • Poor connection or corroded contacts
  • Wiring harness damage

How to Fix

  1. Check the continuity of the EVAP system pressure sensor circuit
  2. Check the condition of contacts and connections
  3. Replace EVAP system pressure sensor if necessary
  4. Check wiring harness for damage

Related codes

Error P2B7A by Vehicle Brand