O2 sensors

10

Asked by Kyleb1979 Mar 28, 2019 at 09:57 AM about the 2012 GMC Sierra 3500HD Chassis SLE Crew Cab 4WD

Question type: Maintenance & Repair

Check engine light came on and the codes were for
the O2 sensors, so I replaced all 4 O2 sensors and
is still throwing multiple codes for the 02 bank 2
sensors, any ideas as to why?

4 Answers
26,810

oilyspill answered 5 years ago

What is engine size? Can you post the code number? Was the only codes, bank 2 sensor 2? Check sensor wiring circuits, check sensor heater circuit where applicable. You may need to check the cat? Also, check fuel trims to see if running rich or lean? Just my opinion.

Mark helpful
10

Kyleb1979 answered 5 years ago

The codes are bank 1 sensor 2, bank 1 sensor 2, bank 2 sensor 2, bank 1 sensor 2, bank 2 sensor 2, and bank 2 sensor 2!

Mark helpful
2,570

Sirkut_Interrupted answered 5 years ago

These are codes the downsteam o2 sensors.. high voltage on the signal wires which means either a short to power on both sides or you bought sensors that are wired wrong and the heater circuit is going in the signal circuit.. p02271 and p02275 are reading rich bc of the 12v going into the signal wires

Mark helpful

Your Answer:

Related Questions

  • O2 sensors 4 Answers

    Check engine light came on and the codes were for the O2 sensors, so I replaced all 4 O2 sensors and is still throwing multiple codes for the 02 bank 2 sensors, any ideas as to why?

    2012 GMC Sierra 3500HD Chassis SLE Crew Cab 4WD

    -

    Maintenance & Repair

  • How many O2 sensors does my 2015 GMC Acadia have? 2 Answers

    I replaced 2 O2 sensors so far but still throwing the O2 code. Wondering if there may be more O2 sensors I didn't find?

    2015 GMC Acadia SLE-2 AWD

    -

    Maintenance & Repair

  • {2010 GMC Acadia SLT O2 Sensors} 2 Answers

    How many upstream sensors and how many Downstream sensors do I have? I dont want to buy the wrong parts

    2010 GMC Acadia SLT-2 AWD

    -

    Maintenance & Repair

  • O2 sensors 1 Answer

    Part name for the 4 o2 sensors

    2003 Chevrolet Silverado 1500 LS RWD

    -

    Maintenance & Repair

  • O2 sensors 2 Answers

    Information on when to replace O2 sensors

    2006 Chevrolet Impala 3.5L LT FWD

    -

    Maintenance & Repair

Looking for a Used Sierra 3500HD Chassis in your area?

CarGurus has 23 nationwide Sierra 3500HD Chassis listings starting at $73,092.

Postal Code:

Shortcuts

Search GMC Sierra 3500HD Chassis Questions

CarGurus Experts

Related Models For Sale

Used GMC Sierra 3500HD
27 Great Deals out of 1,300 listings starting at $3,000
Used GMC Sierra 2500HD
29 Great Deals out of 2,202 listings starting at $3,000
Used Chevrolet Silverado 3500HD Chassis
57 listings starting at $36,999
Used GMC Sierra 1500
123 Great Deals out of 8,182 listings starting at $3,000
Used Ford F-350 Super Duty Chassis
6 Great Deals out of 56 listings starting at $16,995
Used Ford F-350 Super Duty
47 Great Deals out of 1,468 listings starting at $7,000
Used Chevrolet Silverado 3500HD
19 Great Deals out of 1,000 listings starting at $3,000
Used RAM 3500 Chassis
19 listings starting at $25,500
Used Ford F-450 Super Duty Chassis
9 listings starting at $94,965
Used Chevrolet Silverado 1500
193 Great Deals out of 7,903 listings starting at $3,000
Used Ford F-550 Super Duty Chassis
14 Great Deals out of 390 listings starting at $39,995
Used Toyota Tacoma
44 Great Deals out of 740 listings starting at $9,975
Used GMC Sierra 3500
4 listings
Used Ford F-150
315 Great Deals out of 13,805 listings starting at $4,500

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.