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1997 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on
Posted to Chrysler Driveability on 11/25/2005 2 Replies

Vehicle has codes PO135, Po138, and PO141 that keep returning. Both O2 sensors have been replaced, both O2s have power and ground to heater circuits. Sliced open whip and traced wires to and from ASD and ground w/ no probelms. Thanls for any help

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  Related Documents & Media  1997 Jeep Grand Cherokee Laredo

 
Message Closed w/FIX

car Vehicle Data

1997 Jeep Grand Cherokee Laredo

VIN 1J4GX58S6V
Engine4.0 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursCruise

Trouble Codes

P0135Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Malfunction
P0138Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Voltage
P0141Heated Oxygen Sensor (Bank 1 Sensor 2) Heater Circuit Malfunction
Message Closed w/FIX

car Vehicle Data

1997 Jeep Grand Cherokee Laredo

VIN 1J4GX58S6V
Engine4.0 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursCruise

Trouble Codes

P0135Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Malfunction
P0138Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Voltage
P0141Heated Oxygen Sensor (Bank 1 Sensor 2) Heater Circuit Malfunction