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

7,495

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

1 of 1 people found this helpful.
74,715

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
    2,040
  • #2
    yetilikesbeer
    Reputation
    1,390
  • #3
    Rowefast
    Reputation
    1,060
View All

Related Models For Sale

Used Chevrolet TrailBlazer
79 Great Deals out of 4,555 listings starting at $1,300
Used Chevrolet S-10
16 Great Deals out of 1,257 listings starting at $1,600
Used Chevrolet Tahoe
743 Great Deals out of 41,772 listings starting at $1,995
Used GMC Jimmy
234 listings starting at $1,950
Used Chevrolet Silverado 1500
2,281 Great Deals out of 169,700 listings starting at $1,000
Used Ford F-150
2,600 Great Deals out of 198,025 listings starting at $1,300
Used Chevrolet Camaro
452 Great Deals out of 30,864 listings starting at $2,495
Used Chevrolet Impala
537 Great Deals out of 35,318 listings starting at $900
Used Chevrolet Suburban
369 Great Deals out of 22,957 listings starting at $1,999
Used Ford Explorer
941 Great Deals out of 69,236 listings starting at $1,295
Used Jeep Wrangler
344 Great Deals out of 17,441 listings starting at $2,995
Used Jeep Grand Cherokee
851 Great Deals out of 70,620 listings starting at $700

Used Cars For Sale

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.