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P0622 Diagnostic Trouble Code Discussion for December 2008

Generator Field Control Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0622
Help Request Posted
2000 Jeep Cherokee SE 4.0L No Start VIN: 1J4FN28S0Y
P0622: gen field not switching properly. ... vehicle for 1/2 day or more with no problems. Then when you turn off and go to restart engine will spin and spin but not fire, let sit for about 15 minutes and will start back. I have replaced crank sensor, cam sensor and battery temp. sensor with no luck....
December 08, 2008