P1691 OBD Trouble Code

1 result found

P1691 - GM
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description

Coolant Gauge Circuit Conditions

Cause

Key on, and then the PCM detected an open, short-to-ground or short-to-voltage condition in the Coolant Gauge Circuit

Try also: https://www.obd-codes.com/p1691