AutoCodes – Ford – P1633 2012 Ford Fusion

P1633 2012 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 2012 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 5,623

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 2012 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 2012 Ford Fusion - Keep Alive Power Voltage Too Low - AutoCodes.com — P1633 2012 Ford Fusion Code - Keep Alive Power Voltage Too Low

What does this mean?

What are the Possible Causes of the DTC P1633 2012 Ford Fusion?

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

How to Fix the DTC P1633 2012 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 2012 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 2012 Ford Fusion code?

Need more information on how to fix the P1633 2012 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 2012 Ford Fusion Code

1. What are common symptoms of OBDII code P1633 in a 2012 Ford Fusion?

- Common symptoms include rough idling, stalling, poor acceleration, and potential difficulty starting the vehicle.

2. What does the OBDII code P1633 "Keep Alive Power Voltage Too Low" mean on a 2012 Ford Fusion?

- This code indicates that the voltage level of the Keep Alive Power (KAP) circuit is below the specified threshold, affecting the vehicle's internal memory functions.

3. What are some possible causes of OBDII code P1633 on a 2012 Ford Fusion?

- Possible causes include a faulty battery, alternator issues, poor electrical connections, wiring damage, or a malfunctioning PCM (Powertrain Control Module).

4. How can I diagnose the cause of OBDII code P1633 on my 2012 Ford Fusion?

- Diagnose by checking the battery voltage, inspecting the alternator, testing the KAP circuit, examining the wiring for damage, and using a scan tool to monitor the PCM data.

5. Can I still drive my 2012 Ford Fusion with OBDII code P1633 present?

- It is not recommended to drive with this code present, as it can lead to potential performance issues and may cause further damage to the vehicle if left unresolved.

6. How can I fix OBDII code P1633 on my 2012 Ford Fusion?

- Repair options include addressing battery or alternator issues, fixing wiring problems, ensuring proper electrical connections, and potentially replacing the PCM if necessary.

7. Will resetting the OBDII code P1633 on my 2012 Ford Fusion make it go away permanently?

- Resetting the code may temporarily clear the warning, but if the underlying issue causing P1633 is not resolved, the code is likely to reappear upon further driving.

8. Is it safe to clear the OBDII code P1633 and continue driving without addressing the issue on my 2012 Ford Fusion?

- It is not recommended to ignore the code and continue driving, as it can lead to potential electrical system malfunctions and impact the overall performance of the vehicle.

9. How much does it typically cost to repair OBDII code P1633 on a 2012 Ford Fusion?

- Repair costs can vary depending on the exact cause of the issue, but expect to pay anywhere from $100 to $500 for parts and labor, with the potential for higher costs if the PCM needs replacement.

10. Can a DIY enthusiast with basic automotive knowledge fix OBDII code P1633 on a 2012 Ford Fusion?

- While some aspects of diagnosing and repairing this code may be manageable for a DIY enthusiast, it is recommended to consult with a professional mechanic for accurate diagnosis and proper repair to ensure the issue is fully resolved.