P1819 OBD Trouble Code

1 result found

P1819 - GM
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description

Internal Mode Switch - No Start (4T65 - E Transmission)

Cause

Key in Start (crank) position, system voltage from 9-18v, then the PCM detected an invalid combination of Internal Mode Switch signals, or a set of signals that indicated a transitional state between gear positions, condition met for 0.5 seconds.

Try also: https://www.obd-codes.com/p1819