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P1389 Diagnostic Trouble Code Discussion for February 2011

No Auto Shutdown Relay Output Voltage To PCM

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Trouble Ticket Help Requests for DTC P1389
Help Request Posted
2004 Jeep Grand Cherokee Laredo 4.7L Misfire VIN: 1J4GW48JX4
P1389: No Auto Shutdown Relay Output Voltage To PCM. hi and thanks, jeep brought to me with lifter noise and missing, pulled left rocker cover found #5 exhaust rocker laying on head. just wondering if any one else has seen this problem? check valve hieght and looks good. i was thinking carbon on valves. valves d...
February 01, 2011