P1891
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
- Ritorno a massa piastra di contatto scatola di rinvio circuito aperto
- Throttle Position Sensor PWM Signal Low
- Transmission Transfer Case Contact Plate Ground Return Open Circuit