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

66,305

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.
18,285

A new cat

1 of 1 people found this helpful.

Your Answer

Add photo

Related Questions

Search Chevrolet S-10 Questions

Chevrolet S-10 Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 2,310
#2 John Saffrahn
John Saffrahn
Reputation 970
#3 Trebor66
Trebor66
Reputation 960
View All

Related Models For Sale

Used Ford Ranger
196 Great Deals out of 5,805 listings starting at $1,650
Used Chevrolet Silverado 1500
1,716 Great Deals out of 175,753 listings starting at $1,250
Used Chevrolet Colorado
217 Great Deals out of 24,313 listings starting at $2,495
Used GMC Sonoma
5 Great Deals out of 469 listings starting at $2,500
Used Toyota Tacoma
544 Great Deals out of 40,814 listings starting at $2,495
Used Ford F-150
2,198 Great Deals out of 206,316 listings starting at $1,499
Used Dodge Dakota
106 Great Deals out of 3,781 listings starting at $1,680
Used Nissan Frontier
305 Great Deals out of 25,149 listings starting at $1,995
Used GMC Sierra 1500
824 Great Deals out of 68,200 listings starting at $2,484
Used Chevrolet Blazer
4 Great Deals out of 1,167 listings starting at $1,255
Used Dodge Ram 1500
455 Great Deals out of 11,151 listings starting at $700
Used GMC Canyon
92 Great Deals out of 9,387 listings starting at $2,495
Used Chevrolet Camaro
226 Great Deals out of 30,943 listings starting at $1,217
Used Ford Mustang
474 Great Deals out of 45,735 listings starting at $1,999

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.