P CODES (POWERTRAIN) P0400 - P0499

Sorry, This Is So Long. We Are Desperate For Ideas. These Are The Events That Have Taken Place. The Gas Gauge Stopped Working A Few...

Hello Everyone, I Failed A Smog Check Due To P0446 Code. I Took Out Evap Purge Valve From Under The Hood, Applied Nine Volts To It, It...

We Replaced The Gas Gauge And The Check Engine Light Came On. They Then Replaced The Fuel Tank Pressure Sensor And The Light Went Out. It...

Returned To Dealer Repair Services Four Times Between Mileage 90,116 And 90,464 To Replace Gas Cap, Purge Line Harness, Evaporative...

I Want To No Where Is The Three-way Catalytic Converter Bank 1 Located, So I Can Replace It. Getting Code P0420. The Car Runs Fine. I Just...

Already Replaced The Purge Valve And Also The Vent Valve. Put A Hundred Miles On It Pop Back On Again. I Know I'm Looking At The Filler...

Car Was Throwing Knock Sensor Codes P0325 And P0330. Check Engine Light On. Car Radio Intermittently Goes Off Then Comes Back On And When...

Scanned Car And Found P0453 Code For Fuel Tank Pressure Sensor. Alldata Shows The Sensor To Be On The Right Side Rear Of The Engine...

Hello There. I Have A 1997 C1500 2wd Pickup In Which The Check Engine Light Is On. The Code Reported From My Handy Dandy Obdii Reader Is...

So, For The Past 4 Months In New England, It’s Obviously Winter And Anytime I Start My Car In The Morning And It’s Below 40 While It...