Why does my 2002 blazer read code 140

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

Question type: Maintenance & Repair

2002 blazer reading code ps 140

2 Answers

7,385

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

1 of 1 people found this helpful.
73,795

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.

Your Answer

Chevrolet Blazer Experts

  • #1
    Andrew Olsen
    Reputation
    2,030
  • #2
    yetilikesbeer
    Reputation
    1,350
  • #3
    Rowefast
    Reputation
    1,030
View All

Related Models For Sale

Used Chevrolet Tahoe
4 Great Deals out of 721 listings starting at $4,995
Used Chevrolet TrailBlazer
4 Great Deals out of 53 listings starting at $3,888
Used Chevrolet S-10
8 listings starting at $5,495
Used GMC Jimmy
19 listings starting at $1,980
Used Chevrolet Silverado 1500
179 Great Deals out of 11,110 listings starting at $999
Used Jeep Grand Cherokee
103 Great Deals out of 2,759 listings starting at $1,695
Used Chevrolet Suburban
8 Great Deals out of 388 listings starting at $5,871
Used Chevrolet Camaro
3 Great Deals out of 814 listings starting at $12,995
Used Ford Explorer
50 Great Deals out of 1,454 listings starting at $2,800
Used Jeep Wrangler
114 Great Deals out of 1,597 listings starting at $3,995
Used Ford F-150
472 Great Deals out of 10,109 listings starting at $3,450
Used Jeep Cherokee
111 Great Deals out of 6,695 listings starting at $11,750

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.