P0420 code

Asked by GuruTFLHD Jul 19, 2018 at 11:19 PM about the 1998 Jeep Cherokee Sport 2-Door 4WD

Question type: Maintenance & Repair

1 Answer
43,000

Hornet_2497 answered 5 years ago

Engine code P0420 means the catalyst is not working to maximum efficiency. Converter may be failing or rear O2 sensor is reading wrong. Engine misfiring allowing unburned gasoline to pass. Engine burning oil. Might just be begging for a thorough tune up.

3 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • P0420 code 1 Answer

    1998 Jeep Cherokee Sport 2-Door 4WD

    -

    Maintenance & Repair

  • P0420 code 1 Answer

    P0420

    2005 Pontiac Grand Prix Base

    -

    Maintenance & Repair

  • P0420 CODE 27 Answers

    Check engine light code reads P0420, what does this mean?

    2002 Mercury Grand Marquis GS

    -

    Maintenance & Repair

  • Jeep CRD limited Radio code 2 Answers

    Lost code for Jeep CRD limited Radio

    2000 Jeep Cherokee Limited 4-Door 4WD

    -

    Maintenance & Repair

  • Code P0420 2 Answers

    After replacing catalyst converter check engine light lit. Scanner shows code P0420. Changed both sensor but still showing code. Any idea?

    2003 GMC Sonoma SLS Ext Cab SB

    -

    Maintenance & Repair

Own this car?

Share your experience with others.

1998 Jeep Cherokee

Write a car review

Review another car

Shortcuts

Search Jeep Cherokee Questions

CarGurus Experts

  • #1
    swtcat13
    Reputation
    4,080
  • #2
    JimRoy
    Reputation
    3,730
  • #3
    Gene Arnett
    Reputation
    3,700
View All

Know more, shop wisely

Search

Related Models For Sale

Used Jeep Grand Cherokee
2,647 Great Deals out of 53,386 listings starting at $1,675
Used Jeep Wrangler
3,112 Great Deals out of 61,823 listings starting at $4,500
Used Toyota RAV4
1,906 Great Deals out of 28,505 listings starting at $2,100
Used Toyota 4Runner
1,239 Great Deals out of 16,696 listings starting at $1,750
Used Honda CR-V
2,028 Great Deals out of 39,277 listings starting at $1,500
Used Dodge Durango
882 Great Deals out of 23,559 listings starting at $3,950
Used Ford Explorer
2,343 Great Deals out of 60,526 listings starting at $1,000
Used Ford F-150
6,119 Great Deals out of 135,269 listings starting at $1,100
Used Toyota Tacoma
2,092 Great Deals out of 35,309 listings starting at $3,500

Used Cars for Sale

2023 Jeep Cherokee For Sale
58 Great Deals out of 1,254 listings starting at $22,888
2022 Jeep Cherokee For Sale
69 Great Deals out of 929 listings starting at $18,376
2021 Jeep Cherokee For Sale
410 Great Deals out of 3,980 listings starting at $15,500
2020 Jeep Cherokee For Sale
230 Great Deals out of 2,322 listings starting at $11,500
2019 Jeep Cherokee For Sale
319 Great Deals out of 3,555 listings starting at $6,990

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.