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2004 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on
Posted to Chrysler Driveability on 12/12/2008 3 Replies

I've got an odd one here! I have a 2004 Jeep Grand Cherokee with a 4.0L. I am getting a P0051 for an O2 heater problem on Bank 2 Sensor 1. I have replaced both upstream oxygen sensors with no help at all. I ran the heater test on a stone cold engine for the 5 ...

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  Related Documents & Media  2004 Jeep Grand Cherokee Laredo

 
Message Closed w/FIX

car Vehicle Data

2004 Jeep Grand Cherokee Laredo

VIN 1J4GW48S04
Engine4.0 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On

Trouble Codes

P0051Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Circuit Low Voltage
Message Closed w/FIX

car Vehicle Data

2004 Jeep Grand Cherokee Laredo

VIN 1J4GW48S04
Engine4.0 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On

Trouble Codes

P0051Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Circuit Low Voltage