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P1260 Diagnostic Trouble Code Discussion for May 2019

Immobilizer System Malfunction


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Trouble Ticket Help Requests for DTC P1260
Help Request Posted
1999 Mercury Grand Marquis LS 4.6L No Start VIN: 2MEFM75W2X
P1260: engine disable for a pats concern. After an engine install it was determined the engine harness was incorrect.While swapping harness two connectors were crossed up and the smoke was released from the pcm. a used pcm has been installed as well as a second one.a used pats control module has b...
May 21, 2019