AutoCodes – Ford – P1633 2011 Ford Fusion

P1633 2011 Ford Fusion Code - Keep Alive Power Voltage Too Low

Quick Answer

The Keep Alive Power (KAPWR) provides a constant voltage input independent of the ignition switch state to the Powertrain Control Module (PCM). Common causes include Open Keep Alive Power (KAPWR) circuit, Faulty Powertrain Control Module (PCM). Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1633 2011 Ford Fusion indicates Keep Alive Power Voltage Too Low .
Common causes: Common causes include Open Keep Alive Power (KAPWR) circuit, Faulty Powertrain Control Module (PCM).
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 5,327

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jul 13, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1633 2011 Ford Fusion Description

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. Loss of Keep Alive Power to the Powertrain Control Module results in immediate Malfunction Indicator Lamp (MIL) illumination and sets DTC P1633.

OBDII Code P1633 2011 Ford Fusion - Keep Alive Power Voltage Too Low - AutoCodes.com — P1633 2011 Ford Fusion Code - Keep Alive Power Voltage Too Low

What does this mean?

What are the Possible Causes of the DTC P1633 2011 Ford Fusion?

Open Keep Alive Power (KAPWR) circuit
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P1633 2011 Ford Fusion?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1633 2011 Ford Fusion code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1633 2011 Ford Fusion code?

Need more information on how to fix the P1633 2011 Ford Fusion code? Get Access to Factory Service Manuals

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1633 2011 Ford Fusion Code

1. What does the OBDII code P1633 for a 2011 Ford Fusion mean?

The code P1633 indicates that the Keep Alive Power (KAP) voltage is too low in the vehicle's powertrain control module.

2. What are the common symptoms of a P1633 code in a 2011 Ford Fusion?

Common symptoms include the vehicle stalling, rough idling, poor acceleration, and possible difficulty starting the car.

3. What are the potential causes of the Keep Alive Power voltage being too low in a 2011 Ford Fusion?

Possible causes of this issue may include a faulty battery, a failing alternator, corroded electrical connections, or a damaged KAP power circuit.

4. How can I diagnose the P1633 code on my 2011 Ford Fusion?

Diagnosing the P1633 code may involve checking the battery voltage, inspecting the alternator for proper functioning, and testing the KAP power circuit for continuity and voltage levels.

5. Can I repair the P1633 code in my 2011 Ford Fusion myself?

Depending on your level of automotive knowledge and experience, you may be able to address the P1633 code yourself by checking and replacing the battery, alternator, or repairing any damaged wiring or connections.

6. Is it safe to continue driving my 2011 Ford Fusion with a P1633 code?

It is not recommended to drive your vehicle with a P1633 code, as it can lead to further electrical issues and potential breakdowns. It is best to address the problem as soon as possible.

7. Will resetting the OBDII code P1633 on my 2011 Ford Fusion make it go away permanently?

Simply resetting the code may temporarily clear the warning light, but if the underlying issue causing the P1633 code is not fixed, the code is likely to reappear.

8. How much does it typically cost to repair a P1633 code on a 2011 Ford Fusion?

The cost of repairing a P1633 code can vary depending on the cause of the issue and whether you choose to address it yourself or take it to a professional mechanic. Costs may include parts and labor.

9. Can a P1633 code on a 2011 Ford Fusion affect the overall performance of the vehicle?

Yes, a P1633 code can impact the performance of your vehicle by causing stalling, rough idling, and other drivability issues. It is important to address this code promptly to avoid further problems.

10. How long does it take to repair a P1633 code on a 2011 Ford Fusion?

The repair time for a P1633 code can vary depending on the exact cause of the issue and the complexity of the repair. It may take anywhere from a few hours to a full day to diagnose and fix the problem.