
NOTE: If the oil pressure switch fails on a tractor with both the 2-wire switch and the 3-wire sensor, the switch can be removed, the port plugged and the 2-wire harness connector capped. 8300 (-2303) 8400 (-1090) Deluxe cabs after the above serial numbers use only the 3-wire oil pressure sensor for the gauge and the warning system.John Deere 7830 Fan speed code western truck and tractor repair 108K subscribers Subscribe 285 Share 13K views 5 years ago Diagnosing low fan speed code, showing Ecu addresses to check fan.

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