P1887 CADILLAC – Torque Converter Clutch Release Switch Circuit

P1887 CADILLAC Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P1887 CADILLAC Possible Causes

Faulty Torque Converter Clutch (TCC) Release Switch,Torque Converter Clutch (TCC) Release Switch harness is open or shorted,Torque Converter Clutch (TCC) Release Switch circuit poor electrical connection

P1887 CADILLAC Description

With the engine speed over 500 rpm, TR switch in D4, Torque Converter Clutch (TCC) commanded on, TCC slip speed is -20 to +40, the Powertrain Control Module (PCM) detects that TCC Release pressure was present (the switch is open).