P1694 BUICK – Tachometer Circuit High Voltage

P1694 BUICK Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P1694 BUICK Possible Causes

Faulty Tachometer,Tachometer harness is open or shorted,Tachometer circuit poor electrical connection

P1694 BUICK Description

With the key on, the Powertrain Control Module (PCM) detects an open, short-to-ground or short-to-voltage condition in the Tachometer Circuit.