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2003 GMC Sierra 1500 HD

 

Question: engine trouble light is on

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WoodyWoodworth, Canoga Park, CA, February 26, 2011, 22:32
 Rookie

I have a engine light test guage it comes up as PO0155 02 Sensor Heater Circuit Circuit Malfunction (Bank 2 Sensor1)Can I repair this myself? I need to get the truck a smog test but can't because the engine light is on. I had it smog tested and it failed. Can you help me Thanks Woody

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  • Answer #1

    Superbob March 02, 2011, 16:04
     Master

    Most likely it's that the sensor heater is faulty. I'd disconnect it and check it with a meter before I bought parts. I'd think you should see something between 3 ohms and 15 ohms for a good heater.
    PS: good idea to tell us which engine you have in the future.

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