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P0147 Engine Code

Discussion in 'General Chevy & GM Tech Questions' started by Demick, Mar 9, 2010.

  1. Demick

    Demick New Member

    Girlfriend was driving her 2000 GMC Jimmy home the other day and her engine light came on and she smelt something burning and it stunk bad.

    When i got home i scanned the codes at it was. P0147 - O2 Sensor Heater Circuit Malfunction ( Bank 1 Sensor 3)

    Now i ripped the truck up and down the road and runs fine no smell. cleared the code and truck seems to be ok never came on again. I would just think it was random but the smell at the same time concerns me. I dont want her getting stuck somewhere.

    I have suspected the CAT was dieing and if u hit it u can hear parts moving around. My thought is that it got clogged for a moment and sensor went lean and the truck chocked on its exhaust. Sound possible?

    I would Appreciate any input. Thanx

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