OBD Guide

P24BB

EVAP System Leak Detection Pump Pressure Sensor Circuit High

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

Symptoms

  • Check Engine Light Is On
  • Problems passing the emissions test
  • Increased fuel consumption
  • The smell of gasoline in or around the car

Causes

  • EVAP pump pressure sensor malfunction
  • Open or short circuit in the sensor circuit
  • Wiring Harness Problems
  • EVAP pump malfunction
  • Damaged or clogged EVAP system

How to Fix

  1. Check the continuity of the pressure sensor circuit
  2. Check the resistance of the pressure sensor
  3. Inspect the wiring harness for damage
  4. Replace EVAP pump pressure sensor if necessary
  5. Check the operation of the EVAP pump

Related codes

Error P24BB by Vehicle Brand