AutoCodes – Ford – P1634 Ford

P1634 Ford Code - Data Output Link Circuit Failure

Quick Answer

P1634 Ford indicates Data Output Link Circuit Failure. Common causes for P1634 Ford include wiring or connector problems, a faulty related sensor or actuator, and control module or calibration issues. 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: P1634 Ford indicates Data Output Link Circuit Failure.
Common causes: Common causes for P1634 Ford include wiring or connector problems, a faulty related sensor or actuator, and control module or calibration issues.
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 6,407

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 Sep 02, 2019

Description
How To Fix
Cost to Diagnose
FAQs
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Code P1634 Ford Description

OBDII Code P1634 Ford - Data Output Link Circuit Failure - AutoCodes.com — P1634 Ford Code - Data Output Link Circuit Failure

How to Fix the DTC P1634 Ford?

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 P1634 Ford 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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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 P1634 Ford Code

1. What are the common symptoms of OBDII code P1634 Ford (Data Output Link Circuit Failure)?

- Common symptoms include the check engine light illuminated on the dashboard, issues with vehicle data communication, and potential difficulty in diagnosing other OBDII codes.

2. What are the possible causes of OBDII code P1634 Ford?

- The code can be triggered by issues such as damaged wiring or connectors in the data link connector (DLC), a faulty PCM (Powertrain Control Module), or a malfunctioning data link circuit.

3. How can I diagnose OBDII code P1634 Ford?

- Diagnosis involves using a scan tool to retrieve the code, checking the wiring and connectors in the DLC, inspecting for any visible damage, and testing the PCM and data link circuit for proper functionality.

4. Can a DIYer repair OBDII code P1634 Ford?

- While some DIYers may attempt to repair this code by checking and repairing wiring issues, it is recommended to consult a professional mechanic for a thorough diagnosis and repair to ensure safety and accuracy.

5. Are there any repair tips for fixing OBDII code P1634 Ford?

- Repair tips include checking for loose or damaged connectors in the DLC, ensuring proper grounding of the PCM, and following manufacturer-specific diagnostic and repair procedures.

6. What should I do if I encounter OBDII code P1634 Ford intermittently?

- If the code appears intermittently, it is important to address it promptly as it may indicate an underlying issue that can worsen over time. Have the vehicle diagnosed by a mechanic to prevent potential problems.

7. Is it safe to continue driving with OBDII code P1634 Ford present?

- It is not recommended to continue driving with this code present, as it can affect the vehicle's performance and potentially lead to other issues. Seek professional assistance to diagnose and repair the problem.

8. Can extreme weather conditions cause OBDII code P1634 Ford to trigger?

- Yes, extreme weather conditions such as excessive heat or moisture can potentially damage wiring and connectors, leading to issues with the data link circuit and triggering the P1634 Ford code.

9. How long does it typically take to repair OBDII code P1634 Ford?

- The repair time can vary depending on the exact cause of the code and the extent of the repairs needed. It is advisable to consult a mechanic for an accurate assessment of the repair timeline.

10. Will resetting the OBDII system clear OBDII code P1634 Ford?

- Resetting the system may temporarily clear the code, but it is likely to reappear if the underlying issue is not addressed. It is important to diagnose and repair the root cause of the problem to prevent future occurrences.