P1631 OBD Trouble Code

1 result found

P1631 - GM
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description

Theft Deterrent System - Start Enable Signal Not Current
Cause

Vehicle Anti-Theft System enabled, then the PCM received an incorrect Fuel Continue Password with Fuel Disable Lockout set

Try also: https://www.obd-codes.com/p1631