Check engine light
10

Asked by GuruXNBTX Nov 02, 2018 at 07:49 PM about the 2002 Mercury Mountaineer AWD

Question type: Maintenance & Repair

I need help. My check engine light is on. We
replaced the egr valve, spark plugs, coils,
pcv valve. Code p1131 coming up. Lack of
ho2s11

1 Answer
20

Jean answered 5 years ago

That will be your o2 sensor down stream

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • Check engine light 1 Answer

    I need help. My check engine light is on. We replaced the egr valve, spark plugs, coils, pcv valve. Code p1131 coming up. Lack of ho2s11

    2002 Mercury Mountaineer AWD

    -

    Maintenance & Repair

  • Check engine light 1 Answer

    I just had my oil changed yesterday and now my check engine light is coming on out of tge blue what could be the problem??

    2006 Mercury Mountaineer Convenience RWD

    -

    Maintenance & Repair

  • Check engine light 1 Answer

    Check engine light came on my Mercury mountaineer 1998 out of the blue to find out my daughter had drove it with no water could tgat cause it to come on

    1998 Mercury Mountaineer AWD

    -

    Maintenance & Repair

  • engine light 1 Answer

    engine light is on but seems to run okay. where do I put the transmission fluid.

    2008 Mercury Mountaineer V8 Premier AWD

    -

    Maintenance & Repair

  • Check engine light 3 Answers

    2002 Mercury Mountaineer

    -

    Maintenance & Repair

Shortcuts

Search Mercury Mountaineer Questions

CarGurus Experts

  • #1
    Gene Arnett
    Reputation
    860
  • #2
    taver91
    Reputation
    570
  • #3
    kbro
    Reputation
    550
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford Explorer
59 Great Deals out of 1,907 listings starting at $6,990
Used Jeep Grand Cherokee
135 Great Deals out of 3,606 listings starting at $4,295
Used Ford Expedition
17 Great Deals out of 656 listings starting at $7,894

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.