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diagnostic codes 2006 PT

Discussion in 'PT Cruiser' started by cliffw1, Mar 26, 2017.

  1. cliffw1

    cliffw1 New Member

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    Gotta take old girl in for e test Cylinder 1 misfire. Fan 2 control circuit. O2 sensor circuit high voltage bank 1 sensor 2. Codes cleared several times & reappear. No obvious loose connectors etc. New plugs. Any ideas? Which is O2 sensor 2. Thanks
     
  2. pt006

    pt006 Member

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    401
    O2 sensor 2 is the one on the back of the cat converter. Check for a bad ground or corroded terminal.
     
  3. cliffw1

    cliffw1 New Member

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  4. chuzz

    chuzz Active Member

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    Have you checked the fender grounds on the drivers side fender? You'll have to remove your battery to get to them, but they're a known area that can rust or break from corrosion caused by a vapor leak from the battery. I'd pull the battery, clean those connectors and see what happens. pt006 and I are also both members on a PT Cruiser forum. If you're interested in joining us, let one of us know and we'll give you the site link.
     
  5. cliffw1

    cliffw1 New Member

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    Thanks chuzz. I think that might be it Removed & cleaned grounds. Drove 80 km. No errors. Sure would like link.
     
  6. ImperialCrown

    ImperialCrown Moderator Level III Supporter

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    You may be able to feel a cylinder misfire as a roughness or shaking. The #1 spark plug tip may appear a different color than the other 3 if this is a problem with this particular cylinder.
    OEM spark plugs (Champion/NGK) Copper core is recommended. New plug wires are recommended every other spark plug change. I have also had issues with non OEM O2 sensors, particularly generic/universal or Bosch O2 sensors. NGK or NTK are the OEM O2 sensor supplier.
    A misfiring spark plug will send unburned oxygen into the exhaust system where an O2 sensor will see unburned oxygen as a lean mixture. The PCM will try to compensate by driving the injectors rich. This can make matters worse for a carbon fouled spark plug.
    The fan control circuit fault code may be unrelated. What is the 'P' code of the circuit fault?
     
  7. cliffw1

    cliffw1 New Member

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    Thanks for input guys. Cleaned grounds & replaced #1 plug wire. Passed. Good for another 2 years. Your help greatly appreciated.
     
  8. chuzz

    chuzz Active Member

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    Cliff, go to www.ptcruiserlinks.com. Both pt006 and I are members there too. And some of the other guys here are too, I just don't remember who else. Having had two brain surgeries messed up my short term memory.
     
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