94 civic cx/B18B1 swap - code 41 after new O2 sensor
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From: Freeport IL
94 civic cx/B18B1 swap - code 41 after new O2 sensor
long story short-
there wasn't anywhere wired for an O2 sensor on my B18B1 swap in my 94 civic cx. so i looked up the pin out and i wired it in a bosch 4 wire oxygen sensor myself
does it matter on the sensor which heater wires go to which in the ecu?
and could it be because my sensor screws in to the end of the header right before the cat?
those are my only two ideas, i'm stuck now
there wasn't anywhere wired for an O2 sensor on my B18B1 swap in my 94 civic cx. so i looked up the pin out and i wired it in a bosch 4 wire oxygen sensor myself
does it matter on the sensor which heater wires go to which in the ecu?
and could it be because my sensor screws in to the end of the header right before the cat?
those are my only two ideas, i'm stuck now
Honda-Tech Member
Joined: Mar 2011
Posts: 1,162
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From: Southern California
Re: still having code 41 after new O2 sensor
long story short-
there wasn't anywhere wired for an O2 sensor on my B18B1 swap in my 94 civic cx. so i looked up the pin out and i wired it in a bosch 4 wire oxygen sensor myself
Cool beans
does it matter on the sensor which heater wires go to which in the ecu?
yes it does, as if its wrong you might have it mixed with the signal wire, or who knows, it is OBD1 so something is wired incorrectly to have the MIL illuminated.
and could it be because my sensor screws in to the end of the header right before the cat?
No
those are my only two ideas, i'm stuck now
there wasn't anywhere wired for an O2 sensor on my B18B1 swap in my 94 civic cx. so i looked up the pin out and i wired it in a bosch 4 wire oxygen sensor myself
Cool beans
does it matter on the sensor which heater wires go to which in the ecu?
yes it does, as if its wrong you might have it mixed with the signal wire, or who knows, it is OBD1 so something is wired incorrectly to have the MIL illuminated.
and could it be because my sensor screws in to the end of the header right before the cat?
No
those are my only two ideas, i'm stuck now
Honda-Tech Member
Joined: Mar 2011
Posts: 1,162
Likes: 0
From: Southern California
Re: still having code 41 after new O2 sensor
Dont do that, instead.......
determine what the 4 wires from the sensor are,
determine where the location at the harness these wires go to.
wire it up.
dont just guess and start swapping wires and stuff or you can ruin conponments.
Its just good practice for your future also!
GL duder!
determine what the 4 wires from the sensor are,
determine where the location at the harness these wires go to.
wire it up.
dont just guess and start swapping wires and stuff or you can ruin conponments.
Its just good practice for your future also!
GL duder!
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Re: 94 civic cx/B18B1 swap - code 41 after new O2 sensor
what model of bosch sensor? just because it's a bosch o2 sensor doesn't mean it's going to work, find a good working sensor, hook it up and re test, also give us a reading of the resistance across the two heater leads on the o2 sensor
