Check engine light

Code P1633

1 Answer

montehammons

Volvo Master 5,531 Answers
Posted on Dec 03, 2011

montehammons

Volvo Master

Joined: Sep 14, 2011

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Ford code P1633: Keep alve memory voltage low.
It means the voltage going to the computer fell below about 10.5 volts to set the code.
Have you experienced battery problems recently? Or had the battery disconnected?
Things to check for: bad battery, low alternator output, battery cables, and power and ground circuits to computer,
Hope you find it, good luck.

montehammons Dec 03, 2011

Okay, Volvo-P1633 is the code for "vehicle speed signal missing". The fault codes for the VSS are in the brake control module of the ABS system, so you'll need a scan of the ABS.
Time to visit the dealer or a good shop. It may be the brake control module, but you need to get the codes. Good luck.

4 Related Answers

Anonymous

4803 Answers
Posted on Feb 20, 2011

SOURCE: hi, i have a problem

Code P1633 simply means that the Keep Alive Power (KAPWR) circuit to the Engine Control Module has been interrupted. This could be due to a dead battery where you had to jump-start your vehicle or because the battery was disconnected for any reason. If your battery is hooked up and in good condition, the code will clear by itself.

Jonah Oneal

14092 Answers
Posted on Sep 04, 2011

SOURCE: code p1633 keeps coming up

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.

Anonymous

7353 Answers
Posted on Sep 29, 2009

SOURCE: 2002 mercury sable DOHC check engine light

A flashing light indicates that the engine is misfiring enough to damage the catalytic converter, this needs attention ASAP, otherwise after the misfiring is repaired, you will be buying a new catalytic converter, the damage may have already been done. as for the p1633 has the battery run low and you had to jump it off, or recharge the battery?

Anonymous

2920 Answers
Posted on Jan 21, 2009

SOURCE: check engine light on, code p1633 pops up, battery good what now!

check the alternator you should be getting more volts than that..

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This has to do with voltage falling too low for "Keep Alive Memory" (or KAM) to the PCM. First check the battery voltage, terminals etc. After that it could be anywhere in the wiring harness. See the link below for add'l help

http://www.taurusclub.com/forum/82-maintenance-repair/113593-p1633-error-code.html

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I am trying to connect the two facts you listed. Your facts may not be enough to find the actual cause of the misfire, however. Certainly a disconnected or otherwise discharged battery will cause the P1633 code.

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