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2001 Acura RSX Replaced Catalytic Converter but Check Engine Light is Still On

My 2001 Acura RSX failed CA smog test because of Check Engine Light. Two mechanics said catalytic converter needed to be replaced. I replaced with a Acura catalytic converter I purchased directly from dealer. Reset the computer but the light has come back on. What do I do now and who can I trust?


Answer:  

We will assume the smog stations suggested replacing the CAT because of a CAT Efficiency fault. The problem with this fault is that it does not necessarily indicate a defective CAT. If the rear oxygen sensor is "lazy" or for any reason not functioning properly your Acura's ECU might translate this problem into a CAT efficiency fault, and a shop may suggest changing the Catalytic Converter.

It is important to ensure that fuel control is functioning properly as well as all oxygen sensors are working. We recommend entrusting your Acura smog check repairs to a smog station will to handle the repairs from diagnosis to passing smog check. Prior to approving any repairs, ask the smog station if they guarantee their diagnosis.


posted by SmogTips Support 05-20-2013 09:57 AM
 


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