any one have any suggestion on what to look for for this code. I keep pulling P0456. I think it all started when I changed the fuel filter (Puralator Brand). I looked over all the hoses, inspected and all seemed fine, changed out the Gas Cap twice to 2 different brands, current one is MOPAR. Code still comes up a few weeks later after clearing it. I have roughly 100K on the ticker, car runs fine and no other issues but the CEL keeps poping up.

 

Reading codes is always a good place to start, then you need to find out what the code means. Looking at the MB OBD code list, it is shown as "P2032-001 EGR, very slight leak [PO456]"
Check your EGR for leaks would be my suggestion as a place to start.

 

My advise : get an UltraGuage EM
Not only does it clear the codes, it also has a readout for "Evaporative System (PSI)" as well as a host of other useful readouts.
( 7 different screens, up to 8 gauges per screen )

I am NOT affiliated with this vendor, I just enjoy the toy.

 

Seems to be hard to find, good luck. CLICK

 

Thanks for the input. I am going to crawl underneath again and take another look, must be something small I am missing. Hopefully!

 

Swap out the hoses under the passenger seat, by the regulator. THere have been reported gas leaks from hoses that were tired. Use hi pressure fuel injector hose only.

The sensor looks at the tank pressure and uses the dinural pressure and temperature fluctuation over several days ( nights ). Woody

 

Just checked out their website and had to buy one.....lol.