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1997 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on
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
FIX posted 11/25/2005
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Message Closed w/FIX
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Related Documents & Media | VIN | 1J4GX58S6V |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Cruise |
Trouble Codes
| P0135 | Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Malfunction |
| P0138 | Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Voltage |
| P0141 | Heated Oxygen Sensor (Bank 1 Sensor 2) Heater Circuit Malfunction |
Message Closed w/FIX
Vehicle Data
1997 Jeep Grand Cherokee Laredo
| VIN | 1J4GX58S6V |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Cruise |
Trouble Codes
| P0135 | Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Malfunction |
| P0138 | Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Voltage |
| P0141 | Heated Oxygen Sensor (Bank 1 Sensor 2) Heater Circuit Malfunction |
Video