need to fix is prob asap

1999 ACURA CL
190,000 MILES • 6 CYL • FWD • MANUAL
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DOMINICAN038
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my acura cl 1999 has been cutting of when driving so ckecked the codes and it gave me these code 02 sensor heater .. circuit malfunction..(bank 1 sensor 2) what dose this mean and what can i do to fix it
Apr 15, 2011 at 11:53 PM
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RASMATAZ
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The oxygen sensor behind rear of catalytic converter
Apr 16, 2011 at 12:03 AM
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DOMINICAN038
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thank
Apr 16, 2011 at 12:07 AM
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WRENCHTECH
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That sensor is not causing your performance issues. What are the exact numbers being stored.
Apr 16, 2011 at 12:09 AM
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KHLOW2008
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The 02 sensor can cause performances issues. It can cause intermittent non or poor response from throttle openings.
Apr 17, 2011 at 8:51 AM
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WRENCHTECH
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I disagree. The downstream sensor is an Converter monitor only and has no effect on engine performance.
Apr 17, 2011 at 11:54 AM
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KHLOW2008
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I have personal experience in this problem. Spent a week trying to find the problem, thinking it is not the cause. After replacement of the sensor, the problem was fixed. Had 3 similar case from friends of mine.
Apr 17, 2011 at 12:41 PM
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WRENCHTECH
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The downstream sensors are not engineered to play any part in fuel mixture decisions. That's not saying that a defect in one couldn't somehow effect the upstream 0/2 circuits through some kind of short circuit but they do not intentionally play any part in engine performance.
Apr 17, 2011 at 1:34 PM
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KHLOW2008
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It is not the fuel mixture decision that is causing the problem. Seems the fault is confusing the PCM.

Sometimes we never know what and how the PCM reads the situation.

Logic sometimes have to be thrown out of the window.
Apr 17, 2011 at 2:53 PM
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