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1996 Ford Econoline E250 4.9L MIL Lamp on, Ineffecient catalist
Hey group, Have several questions tonight. First I am new to OBDII systems and am new to twin o2 sensor systems. Am I correct in saying that the front o2 sensor of a exhaust bank feeds to the ecm how the motor is running and the rear sensor decides how the...
FIX posted 7/1/1999
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Message Closed w/FIX
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| VIN | A1FTJE34Y2 |
| Engine | 4.9 L / 6 cyl |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp on, Ineffecient Catalist |
| Occurs | Always |
| Misc. | Federal Emissions |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Message Closed w/FIX
Vehicle Data
1996 Ford Econoline E250
| VIN | A1FTJE34Y2 |
| Engine | 4.9 L / 6 cyl |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp on, Ineffecient Catalist |
| Occurs | Always |
| Misc. | Federal Emissions |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
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