Why does my 2002 blazer read code 140

Asked by jeff Feb 28, 2017 at 05:12 PM about the 2002 Chevrolet Blazer LT 4-Door 4WD

Question type: Maintenance & Repair

2002 blazer reading code ps 140

2 Answers
34,765

lrodri911 answered 7 years ago

indicates that the O2 sensor for Bank 1, Sensor 2 failed respond

1 people found this helpful.
Mark helpful
221,015

Rowefast answered 7 years ago

P0140 CHEVROLET - O2 Sensor Circuit No Activity Detected Bank 1 Sensor 2...Possible causes; Faulty Rear Heated Oxygen Sensor Bank 1, Rear Heated Oxygen Sensor Bank 1 harness is open or shorted, Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection, Inappropriate fuel pressure, Faulty fuel injectors, Intake air leaks may be faulty, Exhaust gas leaks,,,Replacing the Rear Heated Oxygen Sensor Bank 1 usually takes care of the problem.

Mark helpful

Your Answer:

Related Questions

  • Why does my 2002 blazer read code 140 2 Answers

    2002 blazer reading code ps 140

    2002 Chevrolet Blazer LT 4-Door 4WD

    -

    Maintenance & Repair

  • Why does my 2002 blazer read code 140 2 Answers

    2002 Chevrolet Blazer LT 4-Door 4WD

    -

    Maintenance & Repair

  • Why is my 2002 Chevy Blazer overheating? 2 Answers

    I have a 2002 Chevrolet Blazer that I bought over the summer and never had any problems with it since then. After the snow storm we had in Indiana last week, it started overheating (got stuck in so...

    2002 Chevrolet Blazer

    -

    Maintenance & Repair

  • Why does my blazer do this 2 Answers

    Why does my 93 k 1500 blazer shut off when I put my foot on the gas I have to put the pedal all the way to the floor to crank then if I put my foot on the gas it shuts off but if I let it stay crank...

    1993 Chevrolet Blazer

    -

    Maintenance & Repair

  • Why doesn't my 2002 Chevy Blazer start after replacing starter 1 Answer

    I replaced my wife's starter on her 2002 Chevy Blazer now it's not wanting too start I had the old starter tested it said needed to be replaced now I replaced it its still not turning over

    2002 Chevrolet Blazer LT 4-Door 4WD

    -

    Maintenance & Repair

Own this car?

Share your experience with others.

2002 Chevrolet Blazer

Write a car review

Review another car

Shortcuts

Search Chevrolet Blazer Questions

CarGurus Experts

  • #1
    Andrew Olsen
    Reputation
    4,240
  • #2
    Rowefast
    Reputation
    3,540
  • #3
    yetilikesbeer
    Reputation
    2,410
View All

Know more, shop wisely

Search

Related Models For Sale

Used Chevrolet Trailblazer
423 Great Deals out of 21,571 listings starting at $2,495
Used Chevrolet Silverado 1500
4,180 Great Deals out of 131,069 listings starting at $1,000
Used Chevrolet Tahoe
1,065 Great Deals out of 21,006 listings starting at $1,000
Used Jeep Grand Cherokee
2,589 Great Deals out of 50,688 listings starting at $500
Used Ford Explorer
2,179 Great Deals out of 63,184 listings starting at $825
Used Toyota RAV4
1,992 Great Deals out of 29,133 listings starting at $1,500
Used Toyota 4Runner
1,158 Great Deals out of 18,585 listings starting at $1,550

Used Cars for Sale

2024 Chevrolet Blazer For Sale
19 Great Deals out of 6,676 listings starting at $26,295
2023 Chevrolet Blazer For Sale
65 Great Deals out of 1,160 listings starting at $21,903
2022 Chevrolet Blazer For Sale
125 Great Deals out of 1,286 listings starting at $19,498
2021 Chevrolet Blazer For Sale
333 Great Deals out of 3,438 listings starting at $14,999
2020 Chevrolet Blazer For Sale
123 Great Deals out of 1,136 listings starting at $15,999

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. Content will be removed if CarGurus becomes aware that it violates our policies.