P1604 Diagnostic Trouble Code Discussion for February 2009
PCM Internal Dual-Port Ram Read/Write Integrity Failure
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| Help Request | Posted | |
| 2001 Mazda MPV DX 2.5L No Start VIN: JM3LW28Y21 P1604: Key Identification Numbers Not Registered In The PCM. ... thieft system in the pcm. We replaced the pcm with a remanufactured unit. Upon replacement we've attempted to perform the (what we think)code word write into into the pcm using the processe that alldata uses by turning different keys on and off with no suc... |
February 24, 2009 |
