CHEVROLET P CODES (POWERTRAIN) P0400 - P0499

1998 Chevrolet Monte Carlo P0401

I Had A Tech Hook Up The Machine And He Gave Me This Code. P0420. He Said It Was Catalyst Or The O2 Sensor. Can U Help Me

Obd 11 Scanner Keeps Coming Up With P0420 Code, Something Keeps Triggering The Check Engine Light To Come On And Have No Ides What. Changed...

Received P0412 & P0418 Codes. Scanner States Secondary Air Injection System Valve A Circuit Malfunction And Secondary Air Injection System...

My Car Has Been Having Some Issues Lately. My Car Has Been Occasionally Stalling At Stops When I Go To Take Off, And I Have To Crank The...

I Get The Following Codes: P0496 And P0171. Once Both Came One, Other Times Only One Will Come On. The Last 3 Times I Filled The Car...

I Have Changed The Secondary Air Pump As The Code Says And I Still Get The Same Message. I Have Checked All Around For Leaks And Cannot Find...

I Bought My Truck Two Months Ago At A Toyota Dealership. Check Engine Light Came On Went To The Dealership They Said They Did Not Have The...

I Don't Know What Needs To Be Done To Fix Evaporative Emission Control System Vent Control Circuit Malfunction. I Also Have A Problem Water...

My '98 Suburban, 5.7l, 4sp Auto, 4wd And 176,000 Miles Is Giving The Subject Code Indicating "catalyst Efficiency Below Normal (bank 1...