Join Now
International Automotive Technicians Network

U1262 Diagnostic Trouble Code Discussion for August 2013

Data Circuit Malfunction


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC U1262
Help Request Posted
1999 Ford F-150 Lariat 5.4L Poor Idle Quality, MIL Lamp on VIN: 1FTRX18LXX
U1262: Scp data fault for J1850 Bus. Check engine light is on for bank 1 only running lean. Bank 2 is not indicated as too lean but LTFT is 19, LTFT on B1 is 25+. No vacuum leaks found. It seems only when vehicle engine cold the problem occurs. At warm idle, the STFT are always 0 +/- 3%. Odometer...
August 15, 2013
1999 Ford F-150 Lariat 5.4L Poor Idle Quality, MIL Lamp on VIN: 1FTRX18LXX
U1262: Scp data fault for J1850 Bus. Check engine light is on for bank 1 only running lean. Bank 2 is not indicated as too lean but LTFT is 19, LTFT on B1 is 25+. No vacuum leaks found. It seems only when vehicle engine cold the problem occurs. At warm idle, the STFT are always 0 +/- 3%. Odometer...
August 15, 2013