P1273 Diagnostic Trouble Code Discussion for February 2007
Air Fuel Sensor (Bank 1 Sensor 1) Lean Shift Monitoring
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| Help Request | Posted | |
| 2003 Ford F-250 Super Duty Lariat 7.3L MIL Lamp on VIN: 1FTNW21F93 P1273: Cylinder 3 - High To Low Side Open Detected. Sets code P1273 immediately on start-up and on injector buzz test (buzzes like the other 7 do) Followed Ford's pinpoint test NA11 thru Na15, and replaced the IDM as directed with same results. Injector harness ohms out at 3.1 from pins 21 and 24 at IDM (statio... |
February 08, 2007 | |
| 2003 Ford F-250 Super Duty Lariat 7.3L MIL Lamp on VIN: 1FTNW21F93 P1273: Cylinder 3 - High To Low Side Open Detected. Sets code P1273 immediately on start-up and on injector buzz test (buzzes like the other 7 do) Followed Ford's pinpoint test NA11 thru Na15, and replaced the IDM as directed with same results. Injector harness ohms out at 3.1 from pins 21 and 24 at IDM (statio... |
February 09, 2007 |
