P1633 2006 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 2006 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.
Code P1633 2006 Ford Fusion Description
What are the Possible Causes of the DTC P1633 2006 Ford Fusion?
- Open Keep Alive Power (KAPWR) circuit
- Faulty Powertrain Control Module (PCM)
How to Fix the DTC P1633 2006 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 2006 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.
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Frequently Asked Questions about P1633 2006 Ford Fusion Code
1. What does the OBDII code P1633 mean on a 2006 Ford Fusion?
P1633 indicates that the Keep Alive Power (KAP) voltage is too low, meaning the PCM (Powertrain Control Module) is not receiving constant battery power to retain memory when the ignition is off.
2. What are common symptoms of code P1633 in a 2006 Ford Fusion?
Symptoms include the check engine light turning on, loss of stored settings such as idle or fuel trim data, and potentially poor engine performance or stalling.
3. What causes the P1633 code to appear?
The most common causes are a disconnected or faulty Keep Alive Power (KAP) circuit, a weak or dead battery, corroded battery terminals, or a blown fuse.
4. Can a weak battery trigger the P1633 code?
Yes, a weak or failing battery can cause insufficient voltage to the PCM, triggering the P1633 code.
5. How do I fix the P1633 code on a 2006 Ford Fusion?
Check the battery voltage, inspect and clean battery connections, ensure the KAP fuse is intact, and verify the wiring and connections to the PCM are secure.
6. Where is the Keep Alive Power circuit located on a 2006 Ford Fusion?
The KAP circuit typically runs from the battery to the PCM via a dedicated fuse in the fuse box. Consult the vehicle’s wiring diagram for exact details.
7. Can driving with the P1633 code cause damage to my car?
Driving with this code may not cause immediate damage, but it can lead to poor engine performance and other issues as the PCM loses critical data each time the car is turned off.
8. Does the P1633 code affect engine performance?
Yes, if the PCM cannot retain memory, it may result in poor fuel efficiency, rough idle, or hesitation due to a lack of adaptive learning.
9. Can a blown fuse cause the P1633 code?
Yes, a blown KAP fuse can interrupt the power supply to the PCM, triggering the P1633 code.
10. Do I need to replace the PCM if I get a P1633 code?
PCM replacement is rarely necessary for this code. Start by checking the battery, wiring, and fuses before considering PCM issues.
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