I hooked car reader up and these are the numbers it gave;

  • U1120
  • P0700
  • P0562

Where do I start to troubleshoot this?

  • Welcome to the site. Sorry, we aren't a rescue site. Responses are just from whoever happens to be on at the time. If you still need help with this, please update your question with details of problems before this event, did the jumper cables get crossed at any point, are all fuses intact, etc. If you have already resolved it, please feel free to post an answer below.
    – CharlieRB
    May 16, 2018 at 11:34

1 Answer 1


The codes indicate some trouble in your electrical system. Did I understand right, it starts and runs as long as the jumper-cables are connected, but does not run on its own?

  • Check your alternator - does it provide 13.8 volts?
  • Check for broken cables or signs of damage - could be a marten has broken some electrical connections.
  • Honest question: what is a marten?
    – sam
    Jun 15, 2018 at 15:27

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .