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P1273 Diagnostic Trouble Code Discussion for October 2007

Air Fuel Sensor (Bank 1 Sensor 1) Lean Shift Monitoring

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Trouble Ticket Help Requests for DTC P1273
Help Request Posted
2000 Ford F-550 Super Duty XL 7.3L Poor Idle Quality, Misfire VIN: 1FDAF57F4Y
P1273: Cylinder 3 - High To Low Side Open Detected. boy we are at our wits end truck cam in rough run scanned and consistantly misfire on#8 with po1278 also po1275 po1274 & po1276 tested all wires for idm to injectors and moved #8 injector to#6 now the truck seems to have good power under load but very roug...
October 10, 2007