I recently(with alot of help from people on this site)learned how to get and
read O.B.D.1 codes for my 94 accord LX. The first code I recieved was "6"
so I replaced the ENGINE COOLANT TEMERATURE SENSOR since doing that
the car will not idle warm at all and I have code "41" primary oxygen sensor/
heater circuit malfunction. Is that the main O2 SENSOR located on the exhaust
manifold or one somewhere else.
Thanks In Advance To All With Any Help
dieman

 

In 1994 there should only be oneoxygen sensor.

Unplug it, & use a multi-meter to measure resistance between the 2 same-color (black?) wires on the sensor. Should be between 10 & 40 ohms. If that's not OK, then you need a new sensor.

If the resistance is OK, post back & we'll try to help out with further things to check.

 

Since you said there should only be one I took a $90.00
chance and replaced it. Low and behold since buying my honda I now
have no C.E.L. light or codes. Thanks for the help dieman

 

did you reset the ecu after you replace the TW sensor ?? ( engine coolant temp sensor)

also just because it has a code 6 tw system,, does NOT necessarily mean that you got a bad TW sensor ,, you need to DIAGNOSE before you replace parts ,, what if it had an issue with the wiring going to the TW sensor ..

Or code 41 , you should not just throw parts in just because code 41 is the O2 system code ..

Like i always say DIAGNOSE,, DIAGNOSE,, DIAGNOSE..

 

How do you check for engine codes on a OBD 1. Honda accord EX? I missed that information!

 

Find the SCS connector. It's a blue plastic plug with 2 wires. Different years, different places... Maybe behind ashtray? I had a '95 Integra (yeah, it's not the same) & it was behind the passenger-side outboard kick-panel.

Jumper that connector with a paperclip (or with a $pecial tool) & turn the key to ON. Watch the check-engine lamp flash out the code.

Want more detail?? Look around the DIY board here, I think there's a link to a good description.

 

the blue obd1 connection on the 94 is directly behind the panel under the glovebox. it has a handy little clip to keep it tucked up and away. i'd recommend taking a peek at it before you unclip it. it's a lot easier to pull of than clip back on. helps to know exactly where and how it sits up there. gets kind of annoying having it just hanging there.

 

Are you aware you revived a thread which is roughly eight years old?