garajizOBD-II code · manufacturer-specific
P1640
Tire / Axle Ratio Out of Acceptable Range
- System
- P1 — Powertrain (manufacturer-specific)
- Severity
- Moderate (3/5)
- Can I keep driving?
- Drive with caution
What does P1640 mean?
P1640 is defined as “Tire / Axle Ratio Out of Acceptable Range”.
Drive gently and only as far as you need to; have it checked as soon as possible.
Manufacturer-specific meanings
The same code can mean something different on some makes.
- Buick, Cadillac, Chevrolet, GM, GMC, Oldsmobile, Saturn: Driver 1 Input High Voltage
- Volkswagen: Internal Control Module EEPROM Error
- BMW: Internal Control Module ROM RAM Error
- Kia: Main Relay Malfunction
- Ford, Lincoln, Mercury: Powertrain DTCs Available in Another Module
Related codes
- P1639Data Output Link Circuit Failure
- P1641Inductive Signature Chip Communication Error
- P1638KAM Voltage Too Low
- P1642Can Link ECM/ABSCM Circuit / Network Malfunction
- P1643Can Link ECM/INSTM Circuit / Network Malfunction
- P1636Theft Deterrent Start Enable Signal Not Correct/ Main Relay Malfunction (Power Hold)
Look up another code
This page is general information; an exact diagnosis needs measurements and a technician’s check.