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1999 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on
Posted to Chrysler Driveability on 12/5/2011 8 Replies

the jeep is coming from a dealership 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...

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  Related Documents & Media  1999 Jeep Grand Cherokee Laredo

 
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car Vehicle Data

1999 Jeep Grand Cherokee Laredo

VIN 1J4GW58S0X
Engine4.0 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

P1685Smart Key Immobilizer Module Invalid Key
Message Closed

car Vehicle Data

1999 Jeep Grand Cherokee Laredo

VIN 1J4GW58S0X
Engine4.0 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

P1685Smart Key Immobilizer Module Invalid Key