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Keep alive power voltage too low - 2004 Ford Explorer

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  • Anonymous Mar 12, 2014

    Keep alive power voltage too low

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  • 149 Answers

The alternator maybe going out or gone out

Posted on Sep 13, 2010

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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

Jun 24, 2017 | Ford Cars & Trucks

1 Answer

2001 ford Taurus code P1633 what does it mean and how do I fix it ?


P1633 - Keep Alive Power Voltage Too Low

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

Possible causes:
-Open KAPWR circuit.
-Damaged PCM.
-Intermittent KAPWR Circuit.

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?

Feb 20, 2015 | 2001 Ford Taurus

1 Answer

Keep alive power voltage too low


alternator problem, if this goes on then your battery could be discharge causing your engine to stop.

Feb 08, 2013 | 2000 Jaguar S-Type

1 Answer

What the P1633 code for ford explorer xlt


Ford code P1633 means: Keep Alive Power Voltage Too Low

Feb 04, 2012 | Cars & Trucks

2 Answers

Code p1633 keeps coming up on check engine light how to fix it


CODE P1633 - PCM KEEP MEMORY VOLTAGE TOO LOW. WHEN YOU SEE THIS CODE THE PCM HAS DETECTED THAT THE KEEP ALIVE MEMORY POWER CIRCUIT TO THE BATTERY WAS INTERRUPTED.

Sep 04, 2011 | 2005 Ford Taurus

1 Answer

Ford escape 2001 ,engine light on all time and code p1633 came when i did the scan ,how can i fix the problem


P1633 - Keep Alive Power Voltage Too Low Indicates that the Keep Alive Power (KAPWR) circuit has experienced a power interrupt.
  • Open KAPWR circuit
  • Damaged PCM
  • Intermittent KAPWR Circuit

QB1 CHECK BATTERY TERMINALS
    Note: If KAPWR is interrupted to the PCM (that is, when a breakout box is installed or the battery is disconnected), DTC P0603/P1605 can be generated on the first power-up.
  • Inspect the battery cables for loose connections, corrosion.
Are the battery terminal connections in good condition? Yes No KEY OFF. Battery terminals are OK. GO to QB2 . REPAIR battery terminals as necessary. QB2 INSPECT ENGINE COMPARTMENT FOR PROPER WIRE ROUTING
  • Inspect Electronic Engine Control (EC) System wiring for proximity to ignition components or wires.
Is wiring too close to ignition components or wires? Yes No REROUTE as necessary. Engine compartment wire routing is OK. GO to QB3 . QB3 CHECK KEEP ALIVE POWER (KAPWR) TO PCM
    Note: Refer to the PCM connector pin numbers in the beginning of this pinpoint test.
  • Disconnect PCM.
  • Measure voltage between KAPWR circuit at the PCM harness connector and ground.
  • While observing digital multimeter, grasp the Electronic EC harness and wiggle, shake or bend a small section while working from the PCM to the dash panel.
Does the voltage reading indicate less than 10.5 volts? Yes No ISOLATE and REPAIR open circuit. No open in KAPWR harness circuit detected. GO to QB4 . QB4 CHECK FOR REPEAT OF DTC P0603/P1605/P1633
  • Reconnect PCM.
  • Start engine and allow it to reach operating temperature.
  • Run Key On Engine Off Self-Test.
  • Retrieve Continuous Memory DTCs.
Is DTC P0603, P1605 or P1633 present? Yes No REPLACE the PCM. REPAIR other DTCs as necessary. If none, testing is complete.

Jun 30, 2011 | Ford Escape Cars & Trucks

1 Answer

2002 Taurus: 2002 taurus has p1633 code. what does it mean...


The code is for ( Keep Alive Power Voltage To Low ) Description: is the KAPWR has experienced a power interrupt. Possible problems: Open KAPWR circuit... Damaged PCM ...or a intermittent KAPWR circuit

May 18, 2010 | 2002 Ford Taurus

2 Answers

Trouble code


please add the engine size in order to answer your question

Jun 03, 2008 | 2002 Ford F150 Regular Cab

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