← Back to list

2005 Dodge Neon SXT P0456 and P0457 - Check Engine Light Flashes, Rough Idle, Poor Fuel Economy

Model: 2005 dodge neon sxt Fault Code: P0456 Posted: 2016-01-22 03:46

I've been trying to diagnose the issue for several attempts. Every time I turn on the car, the check engine light starts flashing, and I'm seeing fault codes P0456 and P0457. The engine idle is rough, and fuel economy has noticeably decreased. I suspect a leak in the evaporative emission system, but I want to confirm with accurate diagnostics.

Related fault codes

P0456P0457

Comments (3)

Anonymous 2016-01-22 08:25

Perform a thorough OBD2 scan—most auto parts stores offer free diagnostic services. Please share all detected codes and symptoms for better troubleshooting.

Anonymous 2016-01-24 01:30

Thanks! I've confirmed the current fault codes are P0456 and P0457. The engine runs roughly at idle, and fuel efficiency has dropped significantly.

Anonymous 2016-01-24 09:07

Start by checking and tightening the gas cap—this is a common cause of P0456 and P0457 in 2005 Dodge Neon SXT models.