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P1604 Diagnostic Trouble Code Discussion for March 2010

PCM Internal Dual-Port Ram Read/Write Integrity Failure


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Trouble Ticket Help Requests for DTC P1604
Help Request Posted
1999 Mazda 626 ES 2.0L No Start VIN: 1YVGF22C6X
P1604: Key ID (Code Word) Not Registered In The PCM. Hi all i have this 99 mazda 626 that came in because customer lost keys. I got two keys. The immobilizer and PCm had to be replaced because all keys are new. The problem i'm having is I cannot pull data from old pcm. I have the IDS and NGS. While manually sett...
March 27, 2010
1999 Mazda 626 ES 2.0L No Start VIN: 1YVGF22C6X
P1604: Key ID (Code Word) Not Registered In The PCM. Hi all i have this 99 mazda 626 that came in because customer lost keys. I got two keys. The immobilizer and PCm had to be replaced because all keys are new. The problem i'm having is I cannot pull data from old pcm. I have the IDS and NGS. While manually sett...
March 30, 2010
1999 Mazda 626 ES 2.0L No Start VIN: 1YVGF22C6X
P1604: Key ID (Code Word) Not Registered In The PCM. Hi all i have this 99 mazda 626 that came in because customer lost keys. I got two keys. The immobilizer and PCm had to be replaced because all keys are new. The problem i'm having is I cannot pull data from old pcm. I have the IDS and NGS. While manually sett...
March 27, 2010
1999 Mazda 626 ES 2.0L No Start VIN: 1YVGF22C6X
P1604: Key ID (Code Word) Not Registered In The PCM. Hi all i have this 99 mazda 626 that came in because customer lost keys. I got two keys. The immobilizer and PCm had to be replaced because all keys are new. The problem i'm having is I cannot pull data from old pcm. I have the IDS and NGS. While manually sett...
March 30, 2010