Im throwing a code 41 for the Primary oxygen sensor heater. How/What do I fix. Do I need a new O2 sensor? Or is the sensor heater located elsewhere on the car? My engine is a B18B1 in a 94 Hatch. Thanks in advance.

 

Nevermind, searched and found some info.

 

please do share. I have the same problem. I've already swapped out the old o2 sensor for a new one and im still throwing the same code.

 

90% of the time if it throws a oxygen sensor heater circuit malf. or code 41 the heater circuit in the sensor is burned up and you need a new one. The other 10% of the time its a wiring issue, ususally a loose pin in the O2 connector from the engine wiring harness. That's been my experience.

 

In my case it's the wiring, but I don't care to source it. When it gets tuned, just ask the tuner to disable that sensor.

 

also look for a crack on your header. i have a long crack on my stock z6 header... Thats what I think is wrong with mine ( i also have a 41 ) .... So i got a cheap e-bay header . i hope this helps if not then i have a new o2 sensor i will use.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by daluv &raquo;</TD></TR><TR><TD CLASS="quote">Im throwing a code 41 for the Primary oxygen sensor heater. How/What do I fix. Do I need a new O2 sensor? Or is the sensor heater located elsewhere on the car? My engine is a B18B1 in a 94 Hatch. Thanks in advance.</TD></TR></TABLE>

lol... i'm throwing the exact same code with the exact year hatch with the same motor but, i don't even have an O2S. the DC headers i have doesn't have an O2 bunge. i need to get the right exhaust manifold and put the O2s in.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bpkmrtoes &raquo;</TD></TR><TR><TD CLASS="quote">

lol... i'm throwing the exact same code with the exact year hatch with the same motor but, i don't even have an O2S. the DC headers i have doesn't have an O2 bunge. i need to get the right exhaust manifold and put the O2s in.</TD></TR></TABLE>
That there is your problem. you need the o2 for this motor or else the ecu will not be getting a singal.....

Update. I put in my new header, (its a JVT from e-bay 4-2-1) i also had a new o2 that i put on ... my cel is gone.

 

What'd you do to clear your code? I'm having it on my EK with a B16a.

 

Pull the the radio backup fuse out for a minute or so. I think its a 7.5. Its in the fuse box under the hood not in the cabin.

 

Mine clears when i reset the ECU. but it always comes back.

 

I swapped the o2 sensor, replaced the header with an ebay one. Still the same problem.

Any chance that the cheap header still allows for the code? If not, I guess I will have to trace the pin/wiring super carefully.