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  1. P

    Horn not working.

    Brown to brown worked for
  2. P

    O2 sensor codes

    Aaron Just seams odd both are "bad". I can throw parts at it but I'm an engineer and am always asking "why" something doesn't work. I plan to replace the fuel pump in any case, I had a Suburban pump fail when on vacation and towing a boat! The lost vacation time and having to pay someone to...
  3. P

    O2 sensor codes

    CobraKing, I have a Bosch OBD 1100 scan tool. While driving my wife was checking the live data. My understanding the "pre-Catylic sensor" should fluctuate from .02 to .8-9. Both sides did. The after should hold steady at about .5, both were in the the .45 range. I'm new to scan tools and...
  4. P

    O2 sensor codes

    The O2 codes are back after 50 mi with no check engine light. At least the P0521 code has stayed off. I might need to replace the O2 sensors and hope that does it
  5. P

    O2 sensor codes

    A Bosch reader. But the check engine light is now gone/cleared. But there is more to the story I didn't think was relevant so I didn't mention it. When I bought the Tahoe 3 weeks ago, it had the P0521, Pressure sensor and the O2 sensors codes. The dealer had said he replaced the filter and oil...
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    O2 sensor codes

    I googled it as a code; When an OBD-II equipped vehicle has a stored P015B code, it means that the powertrain control module (PCM) has detected a delayed response time from the upstream (first one after the exhaust leaves the engine, in front of catalytic converter) oxygen (O2) sensor or...
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    O2 sensor codes

    First post here. I just bought a 2013 Tahoe SSV. Real clean and minimal holes. But my question is not related to the SSV type, so I post here. It's throwing codes for the O2 sensors, P015B and P015D. Delayed responce-Lean to Rich, Banks 1 and 2 Senors 1 How to tell if it has bad catalytic...

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