Mazda 626 P Codes (Powertrain) P0400 - P0499

Car: 2002 Mazda 626 Lx 4cyl 2.0l The Check Engine Light With Code P0421 Goes On When The Car Run City Miles, And Goes Off When Running...

Hi, Have Mazda And I Have Check Engine Light On. Comes On Every 30-40 After I Reset It. The Code P0400 Reads: Exhaust Gas Recirculation...

I Have A 2000 Mazda 626 V6. For The Last Couple Of Years The Check Engine Light Comes On With A P0420. It Might Come On For A Couple Of Days...

Greetings, First Time Poster. I Have A 2000 626 With About 64k Miles, A 2.0 And Auto Trans. I Have Been Working The P0420 Problem With...

This Car Has Had New Egr Valve, Timing Belt, And Lots More.. The Obdii Keeps Telling Us P0400 And Now After Refurbished Ecu, P0400 (egr...

I Have A Mazda 626.2001 4 Cyl. Auto. 76k. Check Engine Light Came On. Autozone Checked And Code P0421 Came On. The Counter Guy Suggested A...