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I bought a used 2010 Honda Civic, driving it home the radio said enter code, went to a Honda dealer, he got the serial number of radio and then the code he tried to imput the code and the radio still did not work, I went home, I left the key in the on position for 1 hour then input the code again, radio came on and I set the clock but after about 4 minutes the radio shut off and it asked to input the code again, did it again and after about 4 minutes radio shut off again. What is the problem?

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This happens when power is removed from the radio (as theft deterrent), like when the radio is removed from the car or the battery is disconnected. Sounds like the radio is losing power. Do you have a way to verify power is constant? – CharlieRB Apr 25 '14 at 18:22

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