P24D9

EVAP System Pressure Sensor/Switch B Circuit Intermittent

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine Light Is On
Unstable engine idling
Increased fuel consumption
The smell of gasoline in or around the car
Problems passing toxicity testing

Causes

Open or short circuit in the sensor wiring harness
Poor contact in the sensor connector
EVAP pressure sensor malfunction
Problems with the engine control unit (ECU)
EVAP system leak

How to Fix

Check the wiring harness and sensor connectors for damage.
Clean the contacts of the sensor connector
Check the resistance and signal of the EVAP pressure sensor
Replace EVAP pressure sensor if necessary
Check the EVAP system for leaks

Related codes

P24DA P24D8 P0451