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2004 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on
We have a Jeep Grand Cherokee that all of the sudden is setting o2 codes. Codes P0031, P0051, P0136. Clear the codes and they immediately reset. Vehicle runs perfect all the time. I found a TSB that addresses this problem calls for a reflash of the PCM. Recomm...
FIX posted 2/5/2011
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Message Closed w/FIX
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Related Documents & Media | VIN | 1J4GW48SX4 |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
Trouble Codes
| P0031 | Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Low Voltage |
| P0051 | Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Circuit Low Voltage |
| P0136 | Heated Oxygen Sensor (Bank 1 Sensor 2) Heater Circuit Malfunction |
Message Closed w/FIX
Vehicle Data
2004 Jeep Grand Cherokee Laredo
| VIN | 1J4GW48SX4 |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
Trouble Codes
| P0031 | Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Low Voltage |
| P0051 | Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Circuit Low Voltage |
| P0136 | Heated Oxygen Sensor (Bank 1 Sensor 2) Heater Circuit Malfunction |
Video