When my "check engine" light came on, the O2 sensor code was the cause. My mechanic tried a stock $60 NAPA replacement but the attached wire on that replacement was too short to reach it's mating plug. Upon more investigation it appears that the ULEV (Ultra Low Emission) 2.3L requires a specific O2 sensor that listed for $279 at NAPA. I thought I'd save some $ and find one online. But the Densco selection does not specify the ULEV application. Can you help me with a part number or info so I can order the correct one the first time? My car is a 2001 Accord EX.

 

What was the actual code?