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Reverse locked out on T-56 and DTC codes at the same time

Discussion in 'Driveline' started by pschwind, Jul 23, 2016.

  1. pschwind

    pschwind Member Established Member

    Messages:
    101
    Joined:
    Aug 29, 2008
    Location:
    Slinger, WI
    I drove my Cobra yesterday and all was great. Later in the day, I went to back up and for some reason, I temporarily pulled it out of reverse and it would no go back into reverse. Reverse was locked out, as in mechanically locked out. At the same time reverse locked out, I received a Service Engine Soon light. I checked the DTC codes and got the following...

    * P0443 Evaporative emission system purge control valve
    * P0446 Evaporative emission system vent control
    * P0135 - o2heater (htr-11) - Upstream Heated Oxygen Sensor Heater circuit fault - Bank No. 1.
    * P0155 - o2heater (htr-21) - Upstream Heated Oxygen Sensor circuit fault - Bank No. 2.

    I’ve heard there is a reverse lockout solenoid on these cars and that it may be a blown fuse. Is that fuse located in the fuse box under the hood or the one under the dash? Any idea as to how it’s labeled or location? I have to believe these two things happening at the exact same time are related.

    Feel free to let me know if you think I’m chasing the wrong problem…
     
    Last edited: Jul 23, 2016
  2. 01yellercobra

    01yellercobra AKA slo984now Established Member

    Messages:
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    Joined:
    Oct 5, 2005
    Location:
    San Diego
    You are correct about the reverse lock out. There's a good chance you popped a fuse and it supplies power for the other circuits listed as well. Do you have an owners manual? The fuses are listed in there.
     
  3. pschwind

    pschwind Member Established Member

    Messages:
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    Joined:
    Aug 29, 2008
    Location:
    Slinger, WI
    Looking for my owners manual now. I knew I had it, but now when I need it I can't find it.
     
  4. pschwind

    pschwind Member Established Member

    Messages:
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    Joined:
    Aug 29, 2008
    Location:
    Slinger, WI
  5. pschwind

    pschwind Member Established Member

    Messages:
    101
    Joined:
    Aug 29, 2008
    Location:
    Slinger, WI
    Fixed.

    Fuse #8 was the culprit. It did not appear blown but I replaced it anyway and all is well after clearing the codes.

    This site is awesome.
     

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