P1635 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 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 Description
What are the Possible Causes of the DTC P1635?
- Incorrect tire size
- Incorrect axle ratio
- Incorrect Vehicle ID block configuration parameters
How to Fix the DTC P1635?
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.
Code Tech Notes
After a new Powertrain Control Module (PCM) has been installed, the Vehicle Identification (VID) block must be programmed into the PCM.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1635 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 code?
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Need Help with the Code?
Get the P1635 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- P1635 Audi — CAN Data Bus A/C No Signal
- P1635 Buick — 5-Volt Reference Circuit Low Conditions
- P1635 Cadillac — 5-Volt Reference Circuit Low Conditions
- P1635 Chevrolet — 5-Volt Reference Circuit Low Conditions
- P1635 Dodge — PCM Memory Performance or Write
- P1635 Ford — Tire / Axle Ratio Out of Acceptable Range
- P1635 GMC — 5-Volt Reference Circuit Low Conditions
- P1635 Honda — Sensor Supply Voltage Circuit 'A' Malfunction
- P1635 Hyundai — Water Heater Relay Malfunction
- P1635 Isuzu — Sensor Supply Voltage Circuit 'A' Malfunction
- P1635 Lincoln — Tire / Axle Ratio Out of Acceptable Range
- P1635 Mercury — Tire / Axle Ratio Out of Acceptable Range
- P1635 Pontiac — 5-Volt Reference Circuit Low Conditions
- P1635 Volkswagen — CAN Data Bus A/C No Signal
Frequently Asked Questions about P1635 Code
1. What are the common symptoms of OBDII code P1635 (Tire / Axle Ratio Out of Acceptable Range)?
- Common symptoms include poor fuel economy, difficulty shifting gears, and illuminated warning lights on the dashboard.
2. What are the possible causes of OBDII code P1635?
- The code P1635 can be triggered by incorrect tire size, axle ratio changes, faulty speed sensors, or issues with the vehicle's computer system.
3. How can I diagnose the cause of OBDII code P1635?
- To diagnose the cause of P1635, you can check the tire size and axle ratio specifications in the vehicle's manual, inspect the speed sensors, and use a diagnostic tool to read the code and gather more information.
4. Can driving with OBDII code P1635 cause further damage to my vehicle?
- Continuing to drive with P1635 may result in poor performance, reduced fuel efficiency, and potential damage to the drivetrain components over time.
5. How can I repair OBDII code P1635?
- The most common solutions for P1635 include recalibrating the tire size and axle ratio settings, replacing faulty speed sensors, and resetting the vehicle's computer system with a diagnostic tool.
6. Is it safe to ignore OBDII code P1635?
- Ignoring P1635 can lead to decreased fuel efficiency and potential drivability issues, so it is recommended to address the underlying cause promptly.
7. Can I reset OBDII code P1635 without fixing the underlying issue?
- Resetting the code without addressing the root cause may temporarily turn off the warning light, but the issue will likely resurface until the problem is resolved.
8. Will fixing OBDII code P1635 improve my vehicle's performance?
- Resolving P1635 by correcting tire size and axle ratio discrepancies and fixing related issues can lead to improved fuel efficiency, smoother shifting, and overall better performance.
9. How long does it typically take to repair OBDII code P1635?
- The repair time for P1635 can vary depending on the underlying cause, but it may take anywhere from a few minutes to a few hours, depending on the complexity of the issue.
10. Can a mechanic help me fix OBDII code P1635?
- Yes, a qualified mechanic can diagnose and repair the underlying issues causing P1635, ensuring proper calibration of tire size, axle ratio, and speed sensors to resolve the code.
Discuss the causes and fixes for P1635 OBDII Code
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I HAVENT CHANGED ANY PARTS OUT IN MONTHS AND IM GETTIN P1635 , 0710 & P0713 CODES AND MY TRANSMISSION IS SHOWING -068 DEGREES ON THE SCT TUNER W/CUSTOM TUNES THAT IVE BEEN RUNNING WITH NO ISSUES FOR THREE YRS. I DID PUT TRUCK IN 4X4 YESTERDAY AT WORK . STARTED HOME AFTER WORK AND OUT OF THE BLUE TRANSMISSION LIGHT CAME ON AND SOUNDED AS THOUGH TRANSMISSION WAS SLIPPING OR SOMETHING. NO POWER ,WRENCH LIGHT ON AND NO TEMP ON OIL TEMP GAUGE ON DASH.
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