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P1639 Diagnostic Trouble Code Discussion for June 2015

5-Volt Reference 'B' Circuit Malfunction


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Trouble Ticket Help Requests for DTC P1639
Help Request Posted
2011 Ford F-350 Super Duty XL 6.2L Excessive Emissions, Monitiors VIN: 1FTRF3B66B
P1639: vehicle id block corrupted not programmed. Heres a real Gem For you IATN guys out there, I have a fleet vehicle here that came in for failing emissions. It had set cat codes and had an open wire on the vent valve ground circuit which was repaired, the cats were changed due to a damaged substrate and o2...
June 04, 2015
2011 Ford F-350 Super Duty XL 6.2L Excessive Emissions, Monitiors VIN: 1FTRF3B66B
P1639: vehicle id block corrupted not programmed. Heres a real Gem For you IATN guys out there, I have a fleet vehicle here that came in for failing emissions. It had set cat codes and had an open wire on the vent valve ground circuit which was repaired, the cats were changed due to a damaged substrate and o2...
June 06, 2015