What does the error code p1633 mean on keep alive?

Error Code P1633 means the PCM (powertrain control module, also known as ECM or engine control module in other vehicle makes) has detected a low voltage on the Keep Alive memory circuit.

What does the p1633 Ford diagnostic trouble code mean?

P1633 FORD Meaning The Keep Alive Power (KAPWR) provides a constant voltage input independent of the ignition switch state to the Powertrain Control Module . This voltage is used by the PCM to maintain the Keep Alive Memory (KAM). The Diagnostic Trouble Code (DTC) indicates that the Keep Alive Power circuit has experienced a power interrupt.

How to check for PCM error code p1633?

Check for a repeat of the error code by reconnecting the PCM, start the engine (slowly) and reach its operating temperature. Next, run Key On Engine Off Self-Test. Then, retrieve continuous memory DTCs. If the error code is present, then that means you should be replacing the PCM.

Why do I see p1633 after clutch repair?

And, since a bad clutch coil can often take out the #112 fuse, that’s why you see a Ford code P1633 after an A/C clutch repair Alldatadiy.com and Eautorepair.net are professional-grade shop manuals—period.

What does it mean to have an error code p1633?

Specification on the definition, troubleshooting, and repairs still vary from one make and model to another. Error Code P1633 means the PCM (powertrain control module, also known as ECM or engine control module in other vehicle makes) has detected a low voltage on the Keep Alive memory circuit.

How much does it cost to diagnose Ford code p1633?

The cost of diagnosing the P1633 FORD code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

What does Ford code p1633 mean on Mercury Sable?

If you own a Ford Taurus or Mercury Sable and encounter a Ford code P1633 after repairing your air conditioning, read this first before spending a lot of time on diagnosis. The PCM requires constant power to retain learned settings. What is a learned setting? Well, the vehicle comes from the factory with set programming.

Error Code P1633 means the PCM (powertrain control module, also known as ECM or engine control module in other vehicle makes) has detected a low voltage on the Keep Alive memory circuit.

What causes keep alive power voltage to be too low?

This code is usually caused by Open Alive Power (KAPWR) circuit and Faulty PCM. The latter is rare though. To check, the codes must first be cleared with a scan tool.

What does DTC p1633 stand for in MIL?

Loss of Keep Alive Power to the Powertrain Control Module results in immediate Malfunction Indicator Lamp (MIL) illumination and sets DTC P1633. Need more information on how to fix the P1633 code?

How does the keep alive memory ( KAM ) work?

The Keep Alive Power (KAPWR) provides a constant voltage input independent of the ignition switch state to the Powertrain Control Module ( PCM ). This voltage is used by the PCM to maintain the Keep Alive Memory (KAM). The Diagnostic Trouble Code (DTC) indicates that the Keep Alive Power circuit has experienced a power interrupt.

What does the error code p1633 mean on keep alive?