P CODES (POWERTRAIN) P0400 - P0499

Nedd Help With Codes

Obd Code Po421 Changed The Catalytic Converter Recently. Engine Would Hardly Go Over 15 Mph. Repaired Broken Valve #2 Cylinder. New...

Flow Performance Under That Code.

I Just Bought This Pickup And The Service Engine Soon Light Has Come On And These Codes Are The Ones I Pulled Out. Can Anyone Direct Me...

What Is The Normal Repair For This Malfunction?

I Have A Bad Relay But I Can't Seem To Find It Anywhere On Line To Buy, I Also Am Having Trouble Getting It At A Local Auto Parts Store....

My Truck Has Been Giving Me Problems With This Code. It’s An Egr Valve. I Changed Out The Part It Says. I Cleaned Out The Throttle Body To...

A Month Ago Got A Light Saying To Check Fuel Filler Cap; Then Couple Days Ago The Cel Came On. Okay, Most Likely The Cap. If I Put A New...

Not Sure Where To Look To Id The Problem Associated With This Error Code. Please Advise.

Can You Tell Me Where To Look To Find The Problem For This Code. I Have Checked The Gas Cap And It Is Sealing Fine. Could It Be Hoses That...