Air/fuel sensor ( P0031 code ) problem

Asked by Jan 28, 2015 at 02:40 PM about the 2008 Mazda MAZDA2

Question type: Maintenance & Repair

~Mazda 2 2008 1.5 sport.. Code P0031

After removing the air/fuel sensor then having to cut wires to re-install it ( long story), I
keep getting P0031 error code .

There are two black wires, a blue and a white... after cutting wires to screw the sensor
back in and re-joining wires I keep getting P0031 code. I`m convinced I`ve joined the
two black wires the wrong way round but there is no obvious difference between them.
Is it possible I`ve blown a fuse/relay ? I`ve tried reversing black wires around but still
get P0031 code.Long story as to why I removed the sensor but it was working before I
removed it. My user manual is useless and doesnt locate the actual fuse/relay.. not
even sure if it even has one... anyone with an idea ???

5 Answers

20,300

I am assuming you mean the heated 02 sensor? did you put in a new one? anyway, once you are sure the wiring is correct use a code scanner and turn off the check engine light. if it doesn't come back then you have fixed the problem. if it does, check for bad wiring spots.

The oxygen AKA the fuel/air sensor.. not the lambda sensor. It was the original sensor put back in. But there are 2 black wires that are identical in colour so I may have wired both up the wrong way. First thing Im asking is that if there is a fuse/relay that could be shorted by wiring up wrong way, then where is the fuse/relay located.

This is the sensor

20,300

As far as I know, there are no fuses or relays associated with the 02 sensors.

1 people found this helpful.
Best Answer Mark helpful

Well that would narrow it down to just maybe a bad connection... Cheers Mike

Your Answer:

MAZDA2

Looking for a Used MAZDA2 in your area?

CarGurus has 276 nationwide MAZDA2 listings starting at $3,250.

ZIP:

Mazda MAZDA2 Experts

  • #1
    davehill1974
    Reputation
    260
  • #2
    tennisshoes
    Reputation
    60
  • #2
    Rowefast
    Reputation
    60
View All

Find great deals from top-rated dealersTM

Search

Related Models For Sale

Used Mazda MAZDA3
318 Great Deals out of 18,379 listings starting at $1,100
Used Honda Fit
150 Great Deals out of 10,981 listings starting at $1,600
Used Toyota Yaris
63 Great Deals out of 5,214 listings starting at $1,800
Used Honda Civic
796 Great Deals out of 60,047 listings starting at $850
Used Mazda MAZDA5
31 Great Deals out of 819 listings starting at $2,895
Used Mazda MAZDA6
171 Great Deals out of 7,763 listings starting at $895
Used Ford Focus
737 Great Deals out of 21,274 listings starting at $599
Used Nissan Versa
329 Great Deals out of 19,064 listings starting at $800
Used Toyota Corolla
1,083 Great Deals out of 66,000 listings starting at $800
Used Toyota Camry
1,234 Great Deals out of 73,708 listings starting at $1,450
Used Ford Fiesta
239 Great Deals out of 14,061 listings starting at $1,500
Used Mazda MX-5 Miata
99 Great Deals out of 3,054 listings starting at $2,500
Used Honda Accord
1,087 Great Deals out of 71,304 listings starting at $1,000

Used Cars for Sale

2014 Mazda MAZDA2 For Sale
81 listings starting at $4,450
2013 Mazda MAZDA2 For Sale
53 listings starting at $4,100
2012 Mazda MAZDA2 For Sale
71 listings starting at $3,500
2011 Mazda MAZDA2 For Sale
71 listings starting at $3,250

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. Content will be removed if CarGurus becomes aware that it violates our policies.