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HatchSpeeD · 05-31-2004, 06:51 PM

Last week I swapped my 94 hatch with a b18b1. Everything was fine and I didn't have not one cel. The other day I had to tap a thread for one of the holes in the tranny but my header was in the way so I took it off and it was kinda hanging by the o2 sensor. When I was done, put the header back on and I got a check engine light. Today I pulled the code and it was a code 41. I think thats a primary o2 sensor heater. What does mean? What needs to be fixed or checked? I know if its a code 1 my o2 is bad, but what does it mean by heater?
Thanks for any help.

92CivicLS · 05-31-2004, 07:08 PM

change the 02 sensor i have the same problem, so, just change it.
i just dont buy one, because im lazy.
4 long blinks and one short right.? 41

HatchSpeeD · 05-31-2004, 07:15 PM

Yea, actually...I just grabbed that off a civic vx hatch and was fine until I had the header hanging by the o2 sensor wires. Maybe I pulled out a wire from the weight of the header?

But what is the Heater circuit malfunction mean?

92CivicLS · 05-31-2004, 07:21 PM

i have no idea, but when you pull that code, thats the way its called. because some models like obd 2 has 2 o2 sensors. i dont know, its hard to explain but the 02 should just fix it all.


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05-31-2004, 06:51 PM	#1
HatchSpeeD ...Hi... Join Date: Apr 2003 Location: Beantown Posts: 1,237 iTrader: 0 / 0% Rep Power: 26	Last week I swapped my 94 hatch with a b18b1. Everything was fine and I didn't have not one cel. The other day I had to tap a thread for one of the holes in the tranny but my header was in the way so I took it off and it was kinda hanging by the o2 sensor. When I was done, put the header back on and I got a check engine light. Today I pulled the code and it was a code 41. I think thats a primary o2 sensor heater. What does mean? What needs to be fixed or checked? I know if its a code 1 my o2 is bad, but what does it mean by heater? Thanks for any help.

05-31-2004, 07:08 PM	#2
92CivicLS Junior Member Join Date: May 2004 Posts: 24 iTrader: 0 / 0% Rep Power: 12	change the 02 sensor i have the same problem, so, just change it. i just dont buy one, because im lazy. 4 long blinks and one short right.? 41

05-31-2004, 07:15 PM	#3
HatchSpeeD ...Hi... Join Date: Apr 2003 Location: Beantown Posts: 1,237 iTrader: 0 / 0% Rep Power: 26	Yea, actually...I just grabbed that off a civic vx hatch and was fine until I had the header hanging by the o2 sensor wires. Maybe I pulled out a wire from the weight of the header? But what is the Heater circuit malfunction mean?

05-31-2004, 07:21 PM	#4
92CivicLS Junior Member Join Date: May 2004 Posts: 24 iTrader: 0 / 0% Rep Power: 12	i have no idea, but when you pull that code, thats the way its called. because some models like obd 2 has 2 o2 sensors. i dont know, its hard to explain but the 02 should just fix it all.

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B18b1 swap code 41