B18c5 o2 sensor problem.. 2wires vs 4wires
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Honda-Tech Member
Joined: Jun 2009
Posts: 68
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From: Las Cruces, NM
B18c5 o2 sensor problem.. 2wires vs 4wires
I just got a b18c5 and swapped it into my db7.
They did not have the o2 sensor hooked up and here lies the problem!
The harness is for 2wires and everthing i have found is for 4wires.
What can i do?
They did not have the o2 sensor hooked up and here lies the problem!
The harness is for 2wires and everthing i have found is for 4wires.
What can i do?
Honda-Tech Member
Joined: Sep 2002
Posts: 1,753
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From: Aspen, CO
Re: B18c5 o2 sensor problem.. 2wires vs 4wires
Its been a while, but i think that the 2 wire is just the power send and return where as the 4 wire is power send/return and heater control.
Try searching for 02 sensor diagrams
Try searching for 02 sensor diagrams
Thread Starter
Honda-Tech Member
Joined: Jun 2009
Posts: 68
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From: Las Cruces, NM
Re: B18c5 o2 sensor problem.. 2wires vs 4wires
Honda-Tech Member
Joined: Oct 2002
Posts: 5,152
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From: chicago burbs, Il, USA
Re: B18c5 o2 sensor problem.. 2wires vs 4wires
4-wire O2 - 2-black = heater wires - 1-white = O2 signal - 1-green = O2 signal ground
2-wire O2 (which I've never seen so I'm guessing) - 1-white = O2 signal - 1-green or black = O2 signal ground
it really doesn't matter what wires are what. the key is the ECU and the O2 play well together. Which ECU are you running?
2-wire O2 (which I've never seen so I'm guessing) - 1-white = O2 signal - 1-green or black = O2 signal ground
it really doesn't matter what wires are what. the key is the ECU and the O2 play well together. Which ECU are you running?
Thread Starter
Honda-Tech Member
Joined: Jun 2009
Posts: 68
Likes: 0
From: Las Cruces, NM
Re: B18c5 o2 sensor problem.. 2wires vs 4wires
4-wire O2 - 2-black = heater wires - 1-white = O2 signal - 1-green = O2 signal ground
2-wire O2 (which I've never seen so I'm guessing) - 1-white = O2 signal - 1-green or black = O2 signal ground
it really doesn't matter what wires are what. the key is the ECU and the O2 play well together. Which ECU are you running?
2-wire O2 (which I've never seen so I'm guessing) - 1-white = O2 signal - 1-green or black = O2 signal ground
it really doesn't matter what wires are what. the key is the ECU and the O2 play well together. Which ECU are you running?
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1993eghatch
Honda Civic / Del Sol (1992 - 2000)
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Sep 24, 2010 05:52 PM
