service engine light on 2003 s10

Asked by Jul 12, 2015 at 08:33 PM about the 2003 Chevrolet S-10 4 Dr LS 4WD Crew Cab SB

Question type: Maintenance & Repair

the code for the service engine light that is on came up as; catalyst efficiency low on bank number one, what is the cure for this, I have been told everything from a fuel injector nozzle to a bad plug wire to replacing catalytic convertor. Help.

2 Answers

70,995

P0420, catalyst below minimum efficiency, means that you need a new catalytic converter. But before replacing it check the emissions decal under the hood to see if you have California emissions. If you do the new converter must be C.A.R.B. (California Air Resources Board) compliant. Otherwise the new converter will set the same trouble code. HTH. -Jim

1 of 1 people found this helpful.
19,535

A new cat

1 of 1 people found this helpful.

Your Answer

Chevrolet S-10 Experts

  • #1
    Andrew Olsen
    Reputation
    2,450
  • #2
    John Saffrahn
    Reputation
    1,040
  • #3
    Trebor66
    Reputation
    1,030
View All

Related Models For Sale

Used Ford Ranger
144 Great Deals out of 5,472 listings starting at $800
Used Chevrolet Colorado
282 Great Deals out of 34,512 listings starting at $1,900
Used Chevrolet Silverado 1500
2,293 Great Deals out of 169,802 listings starting at $1,000
Used GMC Sonoma
406 listings starting at $2,200
Used Toyota Tacoma
587 Great Deals out of 44,877 listings starting at $1,790
Used Ford F-150
2,609 Great Deals out of 198,102 listings starting at $1,300
Used Dodge Dakota
88 Great Deals out of 3,667 listings starting at $1,750
Used Nissan Frontier
357 Great Deals out of 23,387 listings starting at $2,495
Used Chevrolet Blazer
3 Great Deals out of 1,061 listings starting at $950
Used GMC Sierra 1500
1,039 Great Deals out of 66,427 listings starting at $2,495
Used GMC Canyon
148 Great Deals out of 14,454 listings starting at $3,000
Used Dodge Ram 1500
380 Great Deals out of 10,830 listings starting at $1,500
Used Chevrolet Camaro
452 Great Deals out of 30,882 listings starting at $2,495
Used Chevrolet Tahoe
745 Great Deals out of 41,784 listings starting at $1,995

Used Cars For Sale

2004 Chevrolet S-10 4 Dr LS 4WD Crew Cab SB For Sale
3 Great Deals out of 59 listings starting at $2,900
2003 Chevrolet S-10 4 Dr LS 4WD Crew Cab SB For Sale
4 Great Deals out of 94 listings starting at $1,600

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.