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P1273 Diagnostic Trouble Code Discussion for November 2014

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

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Trouble Ticket Help Requests for DTC P1273
Help Request Posted
1999 Ford F-250 Super Duty Lariat 7.3L MIL Lamp on VIN: 1FTNX21F6X
P1273: Cylinder 3 - High To Low Side Open Detected. ... this truck the engine broke a piston in it. So the customer brings us a used engine from our local salvage yard. I fix a couple small damage items (rocker cover,oil pan) go ahead and install the engine and get it running with all fresh filters and oil. Tes...
November 06, 2014