Crank no start 99 4.6 . Gets fuel, obd read p0606 not sure to replace pcm

BromandoGT99

New Member
Feb 2, 2020
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Carson City Nevada
1999 gt 4.6 crank no start has fuel and fuel pressure. Obd scan tool read p0606 which is pcm failure not sure if i should replace pcm. Have taken the car to a mechanic before and they had the keys remade it ran for a couple years after that few months back i went to fill up at the gas station and it would not start..need help for sure im at a loss cant find answers anywhere
 
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wmburns

SN Certified Technician
Aug 14, 2009
5,890
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Houston Texas
Don't see many DTC codes that come straight out and say "replace PCM". Here's some information that may help if looking for a "junk yard" PCM.

ForScan ODB2 scanner w ELM327 USB

If this were my car I would double check:
  • power(s) and ground
  • look for water damage
  • look for rodent activity
  • inspect the PCM printed circuit board for evidence of over heating or water intrusion.

>>
P0606 - Powertrain Control Module Internal Communication error

P0606 indicates register readback (PCM internal Communications) error.

  • Damaged PCM