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getting error code P1128 & P1129 on a 2006 jeep commander, 4.7 Engine, Researching this problem i found the codes p1128 & p1129 are not listed for this year Jeep..

I replaced all (4) o2 sensors, Pcm,
Vehicle: 2006, Jeep Commander (Base) 4.7

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P1128 and P1129  Closed loop fueling not achieved that correct, this is seen mostly on Dodge vehicles, What usually set this code is the when the wrong sparkplug type is used (it can also set a cam position code). , This can also set if the oil level is overfilled  You may want to use a different scan tool, Scan tool read the engine code differently.

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