Join Now
International Automotive Technicians Network

P1685 Diagnostic Trouble Code Discussion for December 2011

Transmission Control Module Power Up Temperature Sensor Circuit Low


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P1685
Help Request Posted
1999 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on VIN: 1J4GW58S0X
P1685: Smart Key Immobilizer Module Invalid Key. ... they say nothing wrong with the car. the car just start and die p1685 on the pcm dealer program a new key saying that will take care that. when that happens sometimes no computers on the bus however from 0 to 2.5 v on pin 2 of the dlc connector. question i...
December 05, 2011
1999 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on VIN: 1J4GW58S0X
P1685: Smart Key Immobilizer Module Invalid Key. ... they say nothing wrong with the car. the car just start and die p1685 on the pcm dealer program a new key saying that will take care that. when that happens sometimes no computers on the bus however from 0 to 2.5 v on pin 2 of the dlc connector. question i...
December 05, 2011