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Discussion Starter · #1 ·
Im have 2 codes poping up fuel bank trim 1 the catalyst system any help identifying what that could mean would be helpful thanks


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What vehicle? Year? Engine? What are the actual codes?

Total guess but failing injector and or failing catalytic converter -- or possibly failing O2 sensor. The computer varies lean/rich based on the MAF and output O2. It expects a certain amount of O2 variance between readings before/after the cat which is how it tests cat efficiency (that it is still working).
 

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Discussion Starter · #3 ·
2006 volvo s60r 2.5l turbo awd not sure the exact code but its telling me Fuel Trim Bank One and Catalyst system is all is says but i cant rember the codes


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If you have a reader, please post the codes. Google is also a good source...
 
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