P CODES (POWERTRAIN) P0100 - P0199

For A Little Over A Month, P0171 (system To Lean) Code Comes Up. My Brother Has Cleaned The Throttle And The Maf. It Then Worked Fine For A...

2002 Sonoma, P0171 System Too Lean, Is Dumping Fuel, Runs Pretty Good Until Reaches Temp, Black Smoke Coming From Exhaust?

Previous Post On This Site Indicated Replacing Capacitor In Wiring Harness Ahead Of Ignition Coil Pack Solved His Problem. Where Do You Find...

Where Is The Map Sensor And How Hard Is Ti To Change? I Pulled The Maf, It Was Dusty. I Cleaned It Amd Replaced. The Check Engine Light...

I Have An 05 Standard Cobalt, - This The Oxygen Sensor Before The Cat. Converter Or After The Cat. Converter? How Do I Know Which O2 Sensor...

We've Been Working With Local And Dealership Mechanics On Trying To Get Rid Of The Frustrating 171 (system Too Lean) Dtc, We've Replaced...

My Kia Has Been Switching Between This Code And A Missfire In Cyl #3 For 2 Years Now Yet I Cannot Figure It Out Any Ideas?

Hello Ty You Have Helped Me Out In The Past. The Po137 (bad Downstream Lower 02 Sensor. No Voltage) And Po171 Bad Downstream )2 Sensor...

Have Replace All 4 Senors, Fix Exhaust Leaks, New Manifolds, New Plugs. Keep Coming Up All Banks. The One Code I Remember Is Po144. I...

2000 Chevy Blazer 4.3. The Service Engine Light Is On And I Got Four Codes Po135, Po146, Po147, Po155. What Do These Codes Mean And What...