Q: 2007 Chrysler 300 codes, Misfire, catalyst, evap, fuel, EGR, 02 sensor, 02 heater, comp, monitors, 1inc, 5 ready, p0457, p0456, th

asked by on

2007 Chrysler 300 codes, Misfire, catalyst, evap, fuel, EGR, 02 sensor, 02 heater, comp, monitors, 1inc, 5 ready, p0457, p0456, then both those codes again with arrows up and down, p0440. Need to smog by Friday. HELP.......So in my search I read about two things I have always done which are leave car on while pumping gas, and I never click had cap more then once because it sounded like I was braking something, I know, please don't laugh please just help. Could this be the cause of some of these codes? Which ones are intertwined? And will resetting, obvi stopping my bad fueling procedure replacing gas cap with locking one, and having the already purchased 02 sensor and a bottle of cata clean, sea foam, and guaranteed to pass help or do I have real issues?

My car has 160000 miles.
My car has an automatic transmission.

When you have many different codes like this then you will need to have all of them tested and looked at to see if it is caused by one or more problems. If you have issues with vehicle after refueling then you may have a defective leaking purge valve or fuel tank vent valve and this can cause excessive fuel vapors to get into engine and cause running rich and misfires. I recommend having a mechanic like one from YourMechanic come to you and diagnose the problems so you can get the car to pass emissions. You will need to make sure all computer monitors are showing pass or you will fail emission tests.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. 2007 Chrysler 300 codes, Misfire, catalyst, evap, fuel, EGR, 02 sensor, 02 heater, comp, monitors, 1inc, 5 ready, p0457, p0456, th

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Q: Overheating Issue

There would need to be a few checks to be done first. See if there is proper fan operation. Does the fan come on after the vehicle reaches about 220 degrees on the gauge? If the fan comes on and...

Q: Attempted to change oil filter, but the oil filter cap broke, the top half of cap is broken off, the threaded part still remains.

Hi, thanks for writing in. I would proceed to carefully continue with the hammer and chisel. You could also try using a punch with the hammer to try and spin it out. The sudden shock from the punch could help...

Q: P0236 circut A range performance

Hello. The boost sensor is on the intercooler exit hose, driver side, bottom of the radiator area, close to the rubber coupling down there. The intercooler looks like another radiator, and sits in front of the coolant radiator. This is...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...