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P1639 Diagnostic Trouble Code Discussion for July 2009

5-Volt Reference 'B' Circuit Malfunction


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Trouble Ticket Help Requests for DTC P1639
Help Request Posted
2006 Ford Ranger XLT 4.0L No Start VIN: 1FTZR45E56
P1639: vid block. ... with us. Truck was brought in on flat bed. No start and no crank. Security light flashing rapidly. Checked all fuses--ok. Attempted to communicate with PCM using IDS and no communication. Checked powers and grounds to PCM---all ok. Ordered new PCM from for...
July 27, 2009
2006 Ford Ranger XLT 4.0L No Start VIN: 1FTZR45E56
P1639: vid block. ... with us. Truck was brought in on flat bed. No start and no crank. Security light flashing rapidly. Checked all fuses--ok. Attempted to communicate with PCM using IDS and no communication. Checked powers and grounds to PCM---all ok. Ordered new PCM from for...
July 29, 2009
2006 Ford Ranger XLT 4.0L No Start VIN: 1FTZR45E56
P1639: vid block. ... with us. Truck was brought in on flat bed. No start and no crank. Security light flashing rapidly. Checked all fuses--ok. Attempted to communicate with PCM using IDS and no communication. Checked powers and grounds to PCM---all ok. Ordered new PCM from for...
July 27, 2009
2006 Ford Ranger XLT 4.0L No Start VIN: 1FTZR45E56
P1639: vid block. ... with us. Truck was brought in on flat bed. No start and no crank. Security light flashing rapidly. Checked all fuses--ok. Attempted to communicate with PCM using IDS and no communication. Checked powers and grounds to PCM---all ok. Ordered new PCM from for...
July 29, 2009