thanks for the info. i'm gonna go to the junkyard tomorrow and pull a couple o2 sensors and see what i come up with...does anybody know if there are any other 4 wire o2 sensors that will bolt to the accord down pipe i guess????....like from a civic, integra, or any other makes and models like a 240 , eclipse or something like that???? i just wanna make sure thats it.

 

another question.... has anybody heard any horror story's about putting the head from a "f22b1" and putting it on a "f22a1" block ???? , and is 151-155ish across all 4 cyl. good for the compression ???

 

anyone know about the o2 sensors from different cars that would work with accord going to the junkyard first thing in the morning....thanks again

 

Looked up Denso part number on their site and cross-referenced it. Here are the cars it pulled up that use the same part number.

ACURA CL (1999) 2.3L L4 F23A1
ACURA CL (1998) 2.3L L4 F23A1
ACURA CL (1997) 2.2L L4 F22B1
HONDA ACCORD EX (1997) 2.2L L4 F22B1
HONDA ACCORD EX (1996) 2.2L L4 F22B1
HONDA ACCORD EX (1995) 2.2L L4 F22B1
HONDA ACCORD EX (1994) 2.2L L4 F22B1
HONDA ODYSSEY EX (1998) 2.3L L4 F23A7
HONDA ODYSSEY EX (1997) 2.2L L4 F22B6
HONDA ODYSSEY EX (1996) 2.2L L4 F22B6
HONDA ODYSSEY EX (1995) 2.2L L4 F22B6
HONDA ODYSSEY LX (1998) 2.3L L4 F23A7
HONDA ODYSSEY LX (1997) 2.2L L4 F22B6
HONDA ODYSSEY LX (1996) 2.2L L4 F22B6
HONDA ODYSSEY LX (1995) 2.2L L4 F22B6
HONDA PRELUDE SI (1996) 2.3L L4 H23A1
HONDA PRELUDE SI 4WS (1991) 2.1L L4 B21A1
HONDA PRELUDE SI 4WS (1990) 2.1L L4 B21A1
HONDA PRELUDE SI ALB (1991) 2.1L L4 B21A1
HONDA PRELUDE SI ALB (1990) 2.1L L4 B21A1
HONDA PRELUDE VTEC (1996) 2.2L L4 H22A1
ISUZU OASIS (1999) 2.3L L4 F23A7
ISUZU OASIS (1998) 2.3L L4
ISUZU OASIS LS (1997) 2.2L L4
ISUZU OASIS LS (1996) 2.2L L4
ISUZU OASIS S (1997) 2.2L L4
ISUZU OASIS S (1996) 2.2L L4

 

If you set your multi=meter on "CONTINUITY" then a good sensor will show that there IS continuity. Set the meter to measure "RESISTANCE" & measure it again in ohms. Your meter may read in kilo-ohms, so that would be 0.010 to 0.040 k-ohm.

 

Resistance measurements only work for the heater circuit (two same-color wires).

The sensor circuit is a very high, indeterminate resistance as I remember and does not provide any diagnostic value. The o2 sensor can be tested outside of car w/ a propane torch to heat the sensor and check output voltage to sensor leads. Many sources for details of this sensor test on www.

good luck

 

Early on it was code 41 for the sensor heater. So that's why I was just talking about the heater resistance.

The sensor itself will measure open-circuit when it's cold. At operating temperature it generates a small voltage (around 1 volt) but that type of problem would throw code 1 rather than code 41.

 

I'd just test the o2s heater, that's the initial issue. Meter selector set on ohms - omega symbol - low scale (X10, X100) or auto range if digital. Do not use the diode/continuity - see Jim's comment. Unplug the o2 connector, test resistance between same color wires (see Texas).
You can get one from the junkyard, and have the same results - need to troubleshoot first.
If you measure 40 ohms or so the sensor's heater is good, then go ahead and test the wiring - see Jim's comment - from the o2s back all the way to the ecm. We can help with the harness troubleshooting if we go past the sensor testing.
Let us know.

 

well went to the junkyard today found one obd-2 accord o2 and two 4 wire o2 sensors from a 92-93 accord and a 626 that fit and a hyundai dohc that looks identicalto the 94-97 accord ones put in the first,second,third...(cause three pluged right in) and .........good old code 41 ! so clearly its in the wiring or the ecu......so can i run my own wires strait to the ecu to see if thats the problem???? i think i'm def. gonna need some help on the wiring its not my strong suit.... and the guy/girl that had the car before cut the wires coming from the ecu side of the harness going to the o2 sensor plug would that cause this????........ hmmmm maybe for a wideband o2.....and the map sensor wires cut for hmmmm?????..... would that explane why it was knockin ever so gently when she bought it and 2 months later spun a rod bearing...................turbo??? cause it has a empty gauge thing on the trim panel. but anyways what ever help , or maybe something simple like a fuse cause this???? car doesnt have either fuse cover so i woudnt know which one to check anyway i pulled like 8-9 of them and then gave up although i did find out why the radio didnt work....blown fuse....i'll test the wires coming from the ecu side of the clip......do they change colors before they get back to the ecu from the o2???? like i said wiring is not my thing so....... thanks in advance.

 

ok tested the o2 heater in the original and got 13.9-14.0 ohms havent tested the ecu side yet its still to hot under there and my book sucks so while i wait can somebody tell me how to go about checking the ecu side of the clip....thanks

and the car seems to run a little better with the 92-93 accord o2 sensor in there and all the ones i pulled from the yard looked much better (less carbon or whatever gets on there) than the one that came out of the car would that be the reason????.