Review on Denso 234-9025 Air Fuel Ratio Sensor: Precision Measuring for Optimal Combustion by Keith Alvord

Engine (F23A4). The two most obvious visual clues to this engine are (see other engine models) (Although 2001 and 2002 Accord engines look the same, they appear to use Denso part 234-9014) Installing this part created concurrent P1166 and P1167 CELs -Codes eliminated (check engine indicator). I've personally used an OBD2 reader to clear codes, although I've seen others see comments about removing the watch fuse or disconnecting the battery to clear codes. Installation is relatively easy, but you will most likely need a tool to remove the 7/8 inch O2 fitting. and a pry bar to remove the old part. You can get both for around $20 or less. And remember to use the included anti-seize material on the threads when installing the new part.