does my 91 honda civic base model hatchback have one or two o2 sensors?

Asked by Apr 13, 2013 at 11:34 AM about the 1991 Honda Civic Hatchback

Question type: Maintenance & Repair

I have a 91 honda civic base model hatchback and I need to know if it has one or two o2 sensors. could some please
help me out with this?

10 Answers

99,085

Usually there are two sensors. The first one is upstream of the converter. It is called bank one, sensor one. The first sensor provides feedback to the fuel trim to adjust the mixture. The second sensor is down stream of the converter and it called bank one, sensor two. It tells you if he catalytic converter is working in most cars. -- In some cars the second sensor is used in fuel trim too.

1 of 1 people found this helpful.

I have the one up in my header but I cant figure out where the plug is at for the second sensor to plug into

99,085

If you have a second sensor, it would be after the catalytic converter. Check with other owners on a Honda forum. You may have only one sensor or someone removed the cat and sensor. Do you have a check engine light?

1 of 1 people found this helpful.

Yeah it comes on after driving for a while the person I bought the car from home made the header and exhaust so the eliminated the cat and everything but I have a new header and I bought a brand new exhaust and cat for it now I just gotta find the plug so I can plug the second sensor in if there is a second sensor on it

click the image it might help

2 of 2 people found this helpful.

That did help some, I just hope they didnt cut the plug off or anything, thanks for the help man I appreciate it.

1,135

you have a 91 it only has the one on the upper portion of the header trust me you wont find one on the cat they didnt do that till like 2002 i do believe

1,135

or around there

Alright sweet thanks man

275

88-91 d15b only have the ox sensor in the exhaust manifold.

1 of 1 people found this helpful.

Your Answer

Add photo

Related Questions

Civic

Looking for a Used Civic in your area?

CarGurus has 85,333 nationwide Civic listings starting at $500.

ZIP:

Search Honda Civic Questions

Honda Civic Experts

#1 Tom Demyan
Tom Demyan
Reputation 1,020
#2 Takoda Fraser
Takoda Fraser
Reputation 1,000
#3 Jonathan Ford
Jonathan Ford
Reputation 980
View All

Related Models For Sale

Used Honda Accord
1,051 Great Deals out of 68,868 listings starting at $1,000
Used Toyota Corolla
979 Great Deals out of 69,758 listings starting at $2,000
Used Toyota Camry
1,223 Great Deals out of 84,969 listings starting at $750
Used Hyundai Elantra
649 Great Deals out of 41,474 listings starting at $900
Used Honda Accord Coupe
177 Great Deals out of 10,304 listings starting at $1,495
Used Ford Mustang
717 Great Deals out of 44,995 listings starting at $1,500
Used BMW 3 Series
1,022 Great Deals out of 31,286 listings starting at $975
Used Nissan Sentra
602 Great Deals out of 52,500 listings starting at $1,000
Used Hyundai Sonata
868 Great Deals out of 48,082 listings starting at $1,495

Used Cars For Sale

2017 Honda Civic For Sale
60,444 listings starting at $16,684
2016 Honda Civic For Sale
93 Great Deals out of 2,690 listings starting at $11,995
2015 Honda Civic For Sale
103 Great Deals out of 3,753 listings starting at $7,995
2014 Honda Civic For Sale
281 Great Deals out of 6,847 listings starting at $7,890
2013 Honda Civic For Sale
86 Great Deals out of 2,192 listings starting at $7,499

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.