AutoCodes – Ford – P0815 2008 Ford Fusion

P0815 2008 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 2008 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 1,816

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 2008 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 2008 Ford Fusion - Upshift Switch Circuit Fault - AutoCodes.com — P0815 2008 Ford Fusion Code - Upshift Switch Circuit Fault

What does this mean?

What are the Possible Causes of the DTC P0815 2008 Ford Fusion?

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

How to Fix the DTC P0815 2008 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 2008 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 2008 Ford Fusion code?

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Need Help with the 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 2008 Ford Fusion Code

1. What is OBDII code P0815 on a 2008 Ford Fusion?

The OBDII code P0815 for a 2008 Ford Fusion indicates a fault in the upshift switch circuit.

2. What are the common symptoms of a P0815 code in a 2008 Ford Fusion?

Common symptoms of a P0815 code may include issues with upshifting, hesitation during gear changes, and the inability to shift gears properly.

3. What are the possible causes of a P0815 code in a 2008 Ford Fusion?

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

4. How can I diagnose a P0815 code in my 2008 Ford Fusion?

Diagnosing a P0815 code may involve visually inspecting the upshift switch and its wiring, testing the switch for continuity, and using a scan tool to check for any related transmission control module faults.

5. Can I still drive my 2008 Ford Fusion with a P0815 code?

It is not recommended to drive your 2008 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 as soon as possible.

6. How can I repair a P0815 code in my 2008 Ford Fusion?

Repairing a P0815 code may involve replacing the upshift switch, repairing any damaged wiring or connectors, or reprogramming the transmission control module. It's recommended to consult a professional mechanic for proper diagnosis and repair.

7. Will resetting the OBDII system clear a P0815 code in my 2008 Ford Fusion?

Resetting the OBDII system may temporarily clear the P0815 code, but if the underlying issue is not addressed, the code is likely to reappear. It's important to diagnose and fix the root cause of the problem.

8. How much does it cost to repair a P0815 code in a 2008 Ford Fusion?

The cost of repairing a P0815 code in a 2008 Ford Fusion can vary depending on the specific issue, parts needed, and labor rates in your area. It's advisable to obtain quotes from different mechanics or repair shops.

9. Can a DIY enthusiast fix a P0815 code in a 2008 Ford Fusion?

While some aspects of diagnosing and repairing a P0815 code may be tackled by a DIY enthusiast with the right tools and knowledge, it's recommended to consult a professional mechanic for accurate diagnosis and proper repair to ensure the issue is resolved correctly.

10. Is the P0815 code a common issue in 2008 Ford Fusion vehicles?

The P0815 code related to the upshift switch circuit fault may not be as common as other OBDII codes, but it can still occur in 2008 Ford Fusion vehicles due to various factors such as wear and tear, electrical problems, or component failures.