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I have a 2005 Civic Hybrid. The check engine light was on with a code P0141. I replaced 2 sensor and cleared the check engine light. I live in California I went to get smog done and at first the drive cycle was not complete for the Egr and the O2, the EGR is complete but the O2 is still not complete. I have driven well over 200 miles with a 3/4 tank on the freeway in town and different driving conditions. What can I do to complete the O2 drive cycle monitor? The check engine light has not came back on. Why won't it complete?

 
Rep Power: 222

What kind of sensor did you buy?

 
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You mean the brand? I bought upstream and down stream Ultra Power from Rock Auto. I bought the ones for California emissions.

 
Rep Power: 367

Not sure if related, but did you get the one around 50 bucks (narrow band used up to 2002) or the 250-ish sensor (wide band, 2003+)?

 
Rep Power: 222

You can't put cheap aftermarket o2 sensors in these cars, you need to put in the proper OEM one, either Denso or ntk, if you still have the bold sensors you should be able to find the brand name or part number on it