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P0150 and P1128 codes

Flat6speed
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Flat6speed Member

Flat6speed

Posted
Posted

I have P0150 and P1128 codes. I have checked the resistance on the pre cat O2 sensor and I get 3.8 ohm and no shorts to the sensor housing. I have the same results on bank 1 and bank 2. I’ve searched for vacuum leaks and have found nothing so far. Any suggestions?  

E8FC6F20-F556-4122-AEE7-CC08D373D360.jpeg

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JFP in PA Member

JFP in PA

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Posted

P0150 is the code for the O2 sensor ahead of the main cat on bank #2 indicating shorted wiring harness.

 

P1128 indicates a mixture issue on Bank #1.

 

I would look to find the issue causing P0150 first, then clear the codes and see if the second one comes back.

Flat6speed Member

Flat6speed

Posted
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Ok I replaced the pre cat O2 sensor on bank 2. Since doing so I haven’t gotten a CEL or any faults on the Durametric. I keep checking the Ready Status with the Durametric and haven’t gotten the Catalytic converter efficiency to show pass yet. All others have passed. How many miles does it normally take to get that one to pass too? 

A3E99CC3-C8C3-44F9-AC57-D4E6E00D3B4B.jpeg

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