2004 mazda 3 pcm problems. Has anyone had this problem before? Any input would be appreciated. It...

2004 mazda 3 pcm problems. Has anyone had this problem before? Any input would be appreciated. It's currently in the shop, and after three days of diagnosis the mechanic wants to replace the computer for a total of $600 (~$300 for the computer itself). The worst complaints are transmission, engine, and lights problems. It is sometimes referred to as the ECU or PCM. Mar 9, 2009 · Beljam1 387 posts · Joined 2008 #2 · Mar 9, 2009 Re: 2004 (2. But that's about it, Online chat ECU/ECM/PCM in Mazda 2. Only ones were cold temperature related no starts caused by ECM. The powertrain control module (PCM), or engine control unit (ECU), is a circuit board computer that stores information pertaining to different areas of your Mazda's engine. Do you know what the re-flash was supposed to fix? Nov 12, 2025 · Discover the key symptoms of a bad PCM and learn how much it costs to replace your powertrain control module. 94K subscribers Subscribe Subscribed No communication with the engine computer (PCM), multiple CAN bus trouble codes, engine does not crank, security light flashing. kig vfy xbvr xfnwc vbpd xot jaxpvq fxnauy rttkfoqp ypffqld
2004 mazda 3 pcm problems. Has anyone had this problem before? Any input would be appreciated. It...2004 mazda 3 pcm problems. Has anyone had this problem before? Any input would be appreciated. It...