P CODES (POWERTRAIN) P0100 - P0199

Hi, My Car Has Been Doing The Following: Coolant Temperature Gauge Often (but Not Always) Goes Down When Rpm’s Go Up. This Happens...

The Mil Is Not On. Car Gets Lousy Gas Mileage (20-mpg At Best) Which Implies The Pcm May Be Operating On An Open Loop Circuit. I Put A...

I Have An Engine That Will Run And Then Trips Up And Won't Hold Idle, Etc And I Get These Codes: P0172 P0175 P2237 P2240 P0136 ...

The Vehicle Previously Had Been Idling At 746-800 Rpms But After The Case Of Egr Valve Blockage That Lasted For 3 Months Before It Was...

I Have A Vacuum Leak! The Exhaust System Shakes And Rattles, But I Don't Hear Anything On The Cat! I Have Checked Everywhere Hoses...

So, I Replaced A List Of Things In This Suv, And I Finally Got Rid Of All The Codes Except I'm Down To P0113. Replaced The Mass Air...

Do These Codes Lead You To Any Type Of Suspicion About Where The Problem Is In General? My Friend Has It, And This Is What It's Showing...

Po171 Code. Car Hard To Start In Morning But Runs Great Afterwards.

I Own A 1999 Silverado 1500 5.3l V8. All The Oxygen Sensors, Map, And Maf Sensors Have Been Replaced In The Past 5-6 Months. Every Few...

I Have Getting Bank 1 Rich Code As Well As Bank 1 Lean Sometimes Maf Sensor Plug Is Wired In And Same With One Or 2 Injectors Does Have A...