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Keep alive power voltage low p1633 2005 ford f250

Posted by Anonymous on

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6ya6ya
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Posted on Jan 02, 2017

alicantecoli
  • 22114 Answers

SOURCE: Anti theif light is blinking fast & it wouldn t

OOPS dealer only ,Try opening and closing door lock three times drivers side 10 sec interval between clicks then try starting if no go then dealer only

Posted on Mar 15, 2009

dennymulford
  • 1055 Answers

SOURCE: 1999 FORD F250 SHAKES AT LOW RPM

change the fuel filter and if that doesnt help do a tune up

Posted on Mar 22, 2009

  • 149 Answers

SOURCE: keep alive power voltage too low

the alternator maybe going out or gone out

Posted on Sep 13, 2010

  • 11 Answers

SOURCE: i have code p1633 keep

I ahve gathered this information from the web...This can be an inexpensive or expensive problem!

Suspect the battery is chronically low; not accepting a charge and needs to be replaced.
The power cables from the battery may be corroded. These should be removed cleaned and retightened.
Check the wiring harness and connections to the Power Train Control Module. Use a contact cleaner/ lubricant and a brush to clean these connections then reseat them firmly. Also make sure there are no chipped or frayed wires as it travels through the engine compartment.

Check all the fuses and other components in the fuse box and the battery junction box to make sure they are in place firmly seated; fuses are good and clean from any corrosion on the clips. The location of these boxes is in your owners manual.

Alas it may be the PCM itself. That should be replaced by a mechanic.

Hope that helps

Posted on Mar 08, 2011

  • 16 Answers

SOURCE: Keep Alive Memory voltage low on 2000 Lincoln LS

have you replace the serpentine belt?

Posted on Jun 15, 2011

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What Is a fix for a P1633 on an 02 ford F150 4.6L TROUBLECODE will not clear


P1633 means that the powertrain control module (PCM) has detected low voltage on the keep alive memory circuit. This is the circuit that supplies constant battery voltage to the keep alive memory portion of the PCM so it can retain information regarding fuel control, idle control and transmission control adaptive strategies to name a few. If the battery is disconnected or voltage drops below 10.5 volts this code will be set. If the battery has not been disconnected then the circuit will need to be checked for opens or high resistance in the wire,shorts,blown fuse, high voltage r/f interference from ignition or charging system components, or the PCM being being faulty itself

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Indicates that the Keep Alive Power (KAPWR) circuit has experienced a power interrupt.

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First thing would be to check the fuse associated with the KAP. In your case, that would be fuse #22 (10A). If you're A/C doesn't work, then that's why. Usually the A/C clutch causes the fuse to blow and your get your P1633 code.

If the fuse is fine and the A/C works, then it might be a bad PCM. If the battery was bad before it might have set this code. Have you tried clearing the codes to see if it comes back or not?

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the alternator maybe going out or gone out

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