P1635 1999 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 1999 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.
Code P1635 1999 Ford F150 Description
What are the Possible Causes of the DTC P1635 1999 Ford F150?
- Incorrect tire size
- Incorrect axle ratio
- Incorrect Vehicle ID block configuration parameters
How to Fix the DTC P1635 1999 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 1999 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 1999 Ford F150 code?
Need more information on how to fix the P1635 1999 Ford F150 code? Get Access to Factory Service Manuals
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Frequently Asked Questions about P1635 1999 Ford F150 Code
1. What are the common symptoms of OBDII code P1635 on a 1999 Ford F150 related to tire/axle ratio out of acceptable range?
The common symptoms include incorrect speedometer readings, issues with traction control, and potential drivability issues.
2. What could cause the OBDII code P1635 on a 1999 Ford F150 indicating tire/axle ratio out of acceptable range?
The code P1635 is typically triggered by a mismatch between the programmed tire size and axle ratio in the vehicle's computer.
3. How can I diagnose the OBDII code P1635 on my 1999 Ford F150?
You can diagnose the code P1635 by using an OBDII scanner to retrieve the code and checking the tire size and axle ratio settings in the vehicle's computer.
4. Can driving with the OBDII code P1635 on a 1999 Ford F150 cause any long-term damage?
Driving with the code P1635 is not recommended as it can lead to inaccurate speedometer readings and affect the vehicle's traction control system, potentially causing further issues.
5. What are the repair options for fixing the OBDII code P1635 on a 1999 Ford F150?
To repair the code P1635, you will need to correct the tire size and axle ratio settings in the vehicle's computer using a diagnostic tool or seek assistance from a professional mechanic.
6. Are there any DIY tips for resolving the OBDII code P1635 on a 1999 Ford F150?
If you are comfortable with vehicle diagnostics, you can try recalibrating the tire size and axle ratio settings using an OBDII scanner and the appropriate tools.
7. How critical is it to address the OBDII code P1635 on a 1999 Ford F150 promptly?
It is important to address the code P1635 promptly to ensure accurate speedometer readings and proper functioning of the vehicle's traction control system.
8. Can resetting the OBDII system clear the P1635 code on a 1999 Ford F150 related to tire/axle ratio issues?
Resetting the OBDII system may temporarily clear the code, but it will likely reappear until the underlying tire size and axle ratio settings are corrected.
9. Is the OBDII code P1635 related to tire/axle ratio out of acceptable range a common issue in 1999 Ford F150 trucks?
The P1635 code related to tire/axle ratio issues is not uncommon in older vehicles like the 1999 Ford F150, especially if modifications have been made to the tire size or axle ratio.
10. Can a malfunction in the speed sensor trigger the OBDII code P1635 on a 1999 Ford F150?
Yes, a malfunctioning speed sensor can sometimes cause the code P1635 to be triggered due to inaccurate speed readings affecting the tire/axle ratio calculations.
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