what is code P1789

Asked by Apr 26, 2012 at 11:52 AM about the Toyota T100

Question type: Maintenance & Repair

i could not get car on road cause of a code P7180 how can i fix it

1 Answer

233,285

This code is related to a malfunction with the park neutral position switch. It's located on the transmission, it should has a large connector with a lot of wires. The connectors can get corrosion on the inside, try removing the connector and check for any corrosion and clean the connectors on both the switch and the wire harness side, if that is not the case the switch should be replaced.

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