garajizOBD-II code · generic
P1866
Transmission Transfer Case System Concern - Servicing Required
- System
- P1 — Powertrain (manufacturer-specific)
- Severity
- Moderate (3/5)
- Can I keep driving?
- Drive with caution
What does P1866 mean?
P1866 is defined as “Transmission Transfer Case System Concern - Servicing Required”.
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.
- Volkswagen: Data Bus Powertrain Missing Messages
- Citroen, Diğer, Peugeot: Transmission Transfer Case System Concern - Servicing Required
- Ford, Lincoln, Mercury: Transmission Transfer Case System Concern Servicing Required
Related codes
- P1865Transmission Transfer Case Contact Plate Power Short To Ground
- P1867Transmission Transfer Case Contact Plate Power Circuit Failure
- P1864Transmission Transfer Case Contact Plate Power Short To Battery
- P1868Transmission Transfer Case Contact Plate Power Open Circuit
- P1863Transmission Transfer Case Contact Plate Power Open Circuit
- P1869Transmission Transfer Case Contact Plate Power Short To Battery
Look up another code
This page is general information; an exact diagnosis needs measurements and a technician’s check.