P1822 CHEVROLET – Internal Mode Switch Circuit ‘B’ Low

P1822 CHEVROLET Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P1822 CHEVROLET Possible Causes

Faulty Internal Mode Switch (IMS),Internal Mode Switch (IMS) harness is open or shorted,Internal Mode Switch (IMS) circuit poor electrical connection

P1822 CHEVROLET Description

With the engine runtime over 5 seconds, system voltage from 8-18v, Fuel Cutoff inactive, engine torque from 30-148 ft-lb (40-200 Nm), the Powertrain Control Module (PCM) detects that the Internal Mode Switch (IMS) signal indicated PARK for 2 seconds, and then the IMS indicated a transitional state between D2 and D1, conditions met for 5 seconds.