AutoCodes – Ford – P0815 2007 Ford Fusion

P0815 2007 Ford Fusion Code - Upshift Switch Circuit Fault

Quick Answer

The Transmission Control Module (TCM) monitors the Upshift Switch Circuit signal. Common causes include Faulty Upshift Switch, Upshift Switch harness is open or shorted, Upshift Switch circuit poor electrical connection. 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: P0815 2007 Ford Fusion indicates Upshift Switch Circuit Fault.
Common causes: Common causes include Faulty Upshift Switch, Upshift Switch harness is open or shorted, Upshift Switch circuit poor electrical connection.
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 1,576

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 09, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0815 2007 Ford Fusion Description

The Transmission Control Module (TCM) monitors the Upshift Switch Circuit signal. The TCM sets the OBDII code when the Upshift Switch Circuit signal is not to factory specifications.

OBDII Code P0815 2007 Ford Fusion - Upshift Switch Circuit Fault - AutoCodes.com — P0815 2007 Ford Fusion Code - Upshift Switch Circuit Fault

What does this mean?

What are the Possible Causes of the DTC P0815 2007 Ford Fusion?

Faulty Upshift Switch
Upshift Switch harness is open or shorted
Upshift Switch circuit poor electrical connection

How to Fix the DTC P0815 2007 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 P0815 2007 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 P0815 2007 Ford Fusion code?

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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 P0815 2007 Ford Fusion Code

1. What does OBDII code P0815 mean for a 2007 Ford Fusion?

The P0815 code in a 2007 Ford Fusion indicates a fault in the upshift switch circuit.

2. What are the common symptoms of a P0815 code in a 2007 Ford Fusion?

Common symptoms of a P0815 code may include issues with shifting gears, the transmission not upshifting properly, and the inability to engage certain gears.

3. What are the possible causes of a P0815 code in a 2007 Ford Fusion?

Possible causes of a P0815 code include a faulty upshift switch, damaged wiring or connectors in the upshift switch circuit, or a malfunctioning transmission control module.

4. How can I diagnose a P0815 code in my 2007 Ford Fusion?

Diagnosing a P0815 code involves using an OBDII scanner to retrieve the code, inspecting the upshift switch and its circuit for any visible damage, and testing the switch and related components for proper functionality.

5. Can I still drive my 2007 Ford Fusion with a P0815 code?

It is not recommended to drive your 2007 Ford Fusion with a P0815 code, as it can lead to further transmission issues and potential safety hazards. It's best to address the problem promptly.

6. How can I repair a P0815 code in my 2007 Ford Fusion?

To repair a P0815 code, you may need to replace the upshift switch, repair any damaged wiring or connectors, or reprogram the transmission control module. It's advisable to consult a professional mechanic for proper diagnosis and repair.

7. Is a P0815 code in a 2007 Ford Fusion a serious issue?

While a P0815 code may not always indicate a severe problem, it can affect the smooth operation of your vehicle's transmission. Ignoring the code could lead to more significant issues over time.

8. How much does it cost to fix a P0815 code on a 2007 Ford Fusion?

The cost of repairing a P0815 code can vary depending on the root cause of the issue, the labor rates in your area, and the cost of parts. It's recommended to get quotes from local mechanics or dealerships for an accurate estimate.

9. Can I reset a P0815 code in my 2007 Ford Fusion by disconnecting the battery?

While disconnecting the battery may clear the code temporarily, it will not fix the underlying issue causing the P0815 code. It's best to diagnose and repair the problem to ensure proper functionality.

10. Will a P0815 code cause my 2007 Ford Fusion to fail an emissions test?

A P0815 code may not directly cause your 2007 Ford Fusion to fail an emissions test, but it's essential to address the issue to maintain optimal performance and comply with emissions regulations.