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Home >> Chrysler >> 2012 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 23 (Transmission Control Module (TCM) - DTCS P1D94 To U1479 - 8HP45 Automatic Transmission) >> Diagnosis And Testing >> P1DDD-TCM Monitoring Performance - Unable To Disengage Drive Or Reverse >> When Monitored:

When Monitored:

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Gear disengagement: 

The ignition switch is turned to the run position.

Neutral or Park requested and three pressure regulators activated.

Engaged position Neutral or Park: 

The ignition switch is turned to the run position.

Neutral or Park requested and since the requested position change to Neutral or Park, the number of activated pressure regulators has been less than three for more than a calibrated amount of time.