» » »


Ask Your Question

2003 GMC Sierra 1500 HD Question: engine trouble light is on



WoodyWoodworth, Canoga Park, CA, February 27, 2011, 01:32

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

1 Answer
Flag This
  • Answer #1

    March 02, 2011, 19:04

    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.

    Flag This