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P1272 Diagnostic Trouble Code Discussion for September 2008

Air Fuel Sensor (Bank 1 Sensor 1) Circuit No Activity

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Trouble Ticket Help Requests for DTC P1272
Help Request Posted
2000 Ford F-450 Super Duty Lariat 7.3L Misfire VIN: 1FDXF47F1Y
P1272: Cylinder 2 - High To Low Side Open Detected. ... for sure maybe less. Have codes P1272, P1274, P1294. Followed pinpoint tests, checked continuity from IDM to valve cover connector on high side, and low sides of all injectors. All have continuity. Checked resistance of suspect injectors, have approx 3 ohm...
September 15, 2008