P1820
Manufacturer-specific fault code
This code has different meanings depending on the manufacturer. Select your vehicle make below to view specific diagnosis and solutions:
Code breakdown
P — System
Powertrain (engine, transmission, fuel & emissions)
1 — Type
Manufacturer-specific
8 — Subsystem
Transmission
Manufacturer-specific meanings
- Circuito bobina relè passaggio da trazione integrale a marce ridotte a trazione integrale
- Internal Mode Switch Circuit A Low
- Transmission Transfer Case Clockwise Shift Relay Coil Circuit Failure
- Pressure Control Solenoid 2 Short To B+