P2409 Possible Causes
- Faulty fuel cap sensor/switch
- Fuel cap sensor/switch circuit open or shorted
- Poor electrical connection in fuel cap sensor/switch circuit
How to Fix Code P2409
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
P2409 Possible Symptoms
Illuminated engine light (or service engine soon warning light)
P2409 Meaning
The Engine Control Module (ECM) monitors the fuel cap sensor/switch. The OBDII code is set when the fuel cap sensor/switch circuit is outside factory specifications.