AutoCodes – Ford – P1636 2009 Ford Fusion

P1636 2009 Ford Fusion Code - Inductive Signature Chip Communication Error

Quick Answer

The Powertrain Control Module (PCM) monitors the communications with the Inductive Signature Chip. Common causes include Reprogram Powertrain Control Module (PCM), Damaged key chip, Faulty Powertrain Control Module. 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: P1636 2009 Ford Fusion indicates Inductive Signature Chip Communication Error.
Common causes: Common causes include Reprogram Powertrain Control Module (PCM), Damaged key chip, Faulty Powertrain Control Module.
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 2,166

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 Aug 02, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1636 2009 Ford Fusion Description

The Powertrain Control Module (PCM) monitors the communications with the Inductive Signature Chip. The Diagnostic Trouble Code (DTC) indicates the Powertrain Control Module has lost communication with the Inductive Signature Chip.

OBDII Code P1636 2009 Ford Fusion - Inductive Signature Chip Communication Error - AutoCodes.com — P1636 2009 Ford Fusion Code - Inductive Signature Chip Communication Error

What does this mean?

What are the Possible Causes of the DTC P1636 2009 Ford Fusion?

Reprogram Powertrain Control Module (PCM)
Damaged key chip
Faulty Powertrain Control Module

How to Fix the DTC P1636 2009 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 P1636 2009 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 P1636 2009 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 P1636 2009 Ford Fusion Code

1. What does the OBDII code P1636 mean on a 2009 Ford Fusion?

P1636 indicates an "Inductive Signature Chip Communication Error," which refers to a failure in communication between the PCM (Powertrain Control Module) and the Inductive Signature Chip, responsible for ignition coil management.

2. What are the common symptoms of a P1636 code on a 2009 Ford Fusion?

Symptoms may include the check engine light turning on, engine misfires, rough idling, difficulty starting the engine, and a potential loss of power.

3. What causes the P1636 code to appear on a 2009 Ford Fusion?

The code can be caused by a faulty inductive signature chip, wiring or connector issues, a malfunctioning PCM, or electrical interference affecting communication.

4. Can I drive my 2009 Ford Fusion with a P1636 code?

Driving with this code is not recommended, as it can cause misfires and potentially damage the engine or catalytic converter over time.

5. How do I diagnose a P1636 code on a 2009 Ford Fusion?

Start by inspecting the wiring and connectors between the inductive signature chip and the PCM for damage or corrosion. Use a scan tool to check for additional codes and verify communication between components.

6. How is the P1636 code fixed on a 2009 Ford Fusion?

Repairs may include replacing a faulty inductive signature chip, repairing damaged wiring or connectors, or reprogramming or replacing the PCM if necessary.

7. How much does it cost to repair a P1636 code on a 2009 Ford Fusion?

The repair cost depends on the specific issue. Wiring repairs may cost $100-$200, while PCM replacement can range from $500-$1,000, including parts and labor.

8. Can a weak battery cause a P1636 code on a 2009 Ford Fusion?

Yes, a weak or failing battery can disrupt communication between the PCM and the inductive signature chip, potentially triggering the P1636 code.

9. Is the P1636 code common in Ford vehicles?

While not extremely common, the P1636 code can occur in Ford vehicles, particularly when there are wiring or PCM-related issues.

10. Can clearing the code fix the P1636 issue on a 2009 Ford Fusion?

Clearing the code may temporarily turn off the check engine light, but it won't resolve the underlying problem. Proper diagnostics and repairs are necessary to fix the issue.