P2409

Fuel Cap Sensor/Switch Circuit Range/Performance

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$6–22 (est.)

Symptoms

Check Engine Light Is On
Problems starting the engine
Increased fuel consumption
The smell of gasoline in or around the car

Causes

Fuel cap sensor malfunction
Open or short circuit in the sensor circuit
Wiring harness damage
Loose fuel cap
Sensor contact corrosion

How to Fix

Check the tightness of the fuel tank cap
Inspect the sensor and its connections for damage
Check the sensor circuit for open and short circuits
Replace the fuel cap sensor if necessary
Clean or replace corroded contacts

Related codes

P2408 P2410 P2411