AutoCodes – Ford – P1635 2000 Ford F150

P1635 2000 Ford F150 Code - Tire / Axle Ratio Out of Acceptable Range

Quick Answer

The All-Wheel Drive (AWD) system continuously monitors vehicle conditions and automatically adjusts the torque distribution between the front and rear wheels. Common causes include Incorrect tire size, Incorrect axle ratio, Incorrect Vehicle ID block configuration parameters. 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: P1635 2000 Ford F150 indicates Tire / Axle Ratio Out of Acceptable Range.
Common causes: Common causes include Incorrect tire size, Incorrect axle ratio, Incorrect Vehicle ID block configuration parameters.
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 2,882

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 Jul 29, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1635 2000 Ford F150 Description

The All-Wheel Drive (AWD) system continuously monitors vehicle conditions and automatically adjusts the torque distribution between the front and rear wheels. During normal operation, most of the torque is sent to the front wheels. If wheel slip between the front and rear wheels is detected or the vehicle is under heavy acceleration, the AWD system increases torque to the rear wheels. When the 4X4 control module detects inappropriate mini spare or road wheels/tires (greater than 7% across the front and rear axle or 14% at one wheel) installed, this Diagnostic Trouble Code (DTC) is set.

OBDII Code P1635 2000 Ford F150 - Tire / Axle Ratio Out of Acceptable Range - AutoCodes.com — P1635 2000 Ford F150 Code - Tire / Axle Ratio Out of Acceptable Range

What does this mean?

What are the Possible Causes of the DTC P1635 2000 Ford F150?

Incorrect tire size
Incorrect axle ratio
Incorrect Vehicle ID block configuration parameters

How to Fix the DTC P1635 2000 Ford F150?

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 P1635 2000 Ford F150 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 P1635 2000 Ford F150 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 P1635 2000 Ford F150 Code

1. What does OBDII code P1635 on a 2000 Ford F150 mean?

This code indicates that the tire or axle ratio is out of the acceptable range set by the vehicle's computer.

2. What are the common symptoms of P1635 in a 2000 Ford F150?

Common symptoms include incorrect speedometer readings, poor fuel economy, and potential issues with the transmission shifting properly.

3. What are the possible causes of the Tire / Axle Ratio Out of Acceptable Range code on a 2000 Ford F150?

Possible causes include changes to tire size or axle ratio, faulty speed sensor, wiring issues, or a malfunctioning PCM (Powertrain Control Module).

4. How can I diagnose the P1635 code on my 2000 Ford F150?

Diagnosing this code typically involves checking the tire size and axle ratio settings, inspecting the speed sensor and wiring for any damage, and using a scan tool to read the data from the PCM.

5. Can I drive my 2000 Ford F150 with the P1635 code?

It is not recommended to drive your vehicle with this code as it can lead to inaccurate speed readings and potential transmission issues.

6. How can I repair the Tire / Axle Ratio Out of Acceptable Range code on my 2000 Ford F150?

Possible repairs include recalibrating the tire size and axle ratio settings, replacing a faulty speed sensor, repairing any damaged wiring, or reprogramming the PCM.

7. Will resetting the trouble codes clear P1635 on my 2000 Ford F150?

Resetting the trouble codes may temporarily clear the code, but if the underlying issue causing the code is not addressed, it will likely reappear.

8. Can a mechanic help me fix the P1635 code on my 2000 Ford F150?

Yes, a qualified mechanic can diagnose and repair the issue causing the P1635 code on your 2000 Ford F150.

9. Is it possible to prevent the P1635 code from appearing on my 2000 Ford F150?

To prevent this code, ensure that any changes to tire size or axle ratio are correctly accounted for in the vehicle's settings and address any speed sensor or wiring issues promptly.

10. How much does it cost to repair the P1635 code on a 2000 Ford F150?

The cost of repairs for this code can vary depending on the specific cause, but it may range from a simple recalibration to replacing a faulty speed sensor or repairing wiring issues.