Need Input
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Newbie
Joined: May 2021
Posts: 1
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From: New Jersey
Year: 2003
Model: Grand Cherokee (WJ)
Engine: 4.0 v6 cali/emission
Having oxygen sensor issues!!!!!!!!
I have a 2003 jeep grand cherokee Laredo 4.0 cali/emission. i have codes po161, po158, po135.
I have replaced all 4 o2 sensors "twice" OEM .I replaced ECU with my vin number and mileage Installed, check fuses, cleared codes, drove for 250 miles Whamm! CEL back on same codes, I am Chasing a ghost, Can anyone suggest to me what could be the problem? Never owned a jeep until now so I'm Lost Here
I have replaced all 4 o2 sensors "twice" OEM .I replaced ECU with my vin number and mileage Installed, check fuses, cleared codes, drove for 250 miles Whamm! CEL back on same codes, I am Chasing a ghost, Can anyone suggest to me what could be the problem? Never owned a jeep until now so I'm Lost Here
Last edited by jdaws; May 10, 2021 at 05:53 AM. Reason: added more
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