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1998 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on
Posted to Chrysler Driveability on 10/6/2009 10 Replies

Hello again. I had this Jeep in the shop Saturday and tried to sort out what’s going on with the downstream O2 sensor (Fed emissions, only 2 sensors). Code is P0138, high voltage sensor 1-2. Sensor reading is off scale on the scan tool, and reading about 4.9 v...

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  Related Documents & Media  1998 Jeep Grand Cherokee Laredo

 
Message Closed w/FIX

car Vehicle Data

1998 Jeep Grand Cherokee Laredo

VIN 1J4GZ58S0W
Engine4.0 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0138Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Voltage
Message Closed w/FIX

car Vehicle Data

1998 Jeep Grand Cherokee Laredo

VIN 1J4GZ58S0W
Engine4.0 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0138Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Voltage