Check engine

Asked by Jul 03, 2017 at 11:31 AM about the 2000 Mercury Grand Marquis LS

Question type: Maintenance & Repair

My check engine light came on. Why
does it sa p51 and p31 on a grand
marq

3 Answers

98,545

Those are not viable codes there should be 4 digits after the P.

1 of 1 people found this helpful.

P5131

98,545

P5131 does not exist in my chart, the closest is for both upstream O2 sensors, I think I would spend the money and get the system live scanned just make sure your not chasing a grounding problem or a low or spike voltage.

Your Answer

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 5 nationwide Grand Marquis listings and the tools to find you a great deal.

Postal Code:

Mercury Grand Marquis Experts

  • #1
    Tracy Hooks
    Reputation
    5,700
  • #2
    kbro
    Reputation
    2,120
  • #3
    Js08016
    Reputation
    1,850
View All

Related Models For Sale

Used Ford Crown Victoria
9 listings starting at $5,995
Used Lincoln Town Car
12 listings starting at $1,850
Used Chevrolet Impala
72 Great Deals out of 928 listings starting at $1,900
Used Ford F-150
451 Great Deals out of 9,038 listings starting at $922
Used Chevrolet Tahoe
5 Great Deals out of 639 listings starting at $6,871
Used Ford Mustang
11 Great Deals out of 1,172 listings starting at $2,995
Used Ford Taurus
21 Great Deals out of 300 listings starting at $2,973
Used Buick LeSabre
15 listings starting at $1,400
Used Honda Accord
69 Great Deals out of 1,098 listings starting at $748

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.