P1DDC - Transmission Control Module Monitoring Processor Performance Unallowed Reverse Engagement

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Transmission Control Module (TCM)
  • Transmission Control Module (TCM) harness is open or shorted
  • Transmission Control Module (TCM) circuit poor electrical connection

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1ddc Description

The Transmission Control Module (TCM) monitors the pressure regulator and solenoid logic to detect a failure in the activation of the pressure regulators and solenoids. The pressure regulators are used to control the pressure to the clutches and the solenoids are used to activate the pressure to the parking lock and to the position valve. The commanded currents of all regulators and solenoids are monitored. The monitoring consists of several diagnostic strategies:

- Transmission blocking (Multiple clutches locked up)

- Wrong driving direction (Incorrect driving direction)

- Gear engagement of Reverse gear while driving forward (Unallowed Reverse engagement)

- Unwanted engaging or disengaging of Parking Lock (Unallowed Park engagement)

OBDII Code P1ddc - Transmission Control Module Monitoring Processor Performance Unallowed Reverse Engagement - AutoCodes.com

P1DDC Information for specific makes

  • P1DDC CHRYSLER Transmission Control Module Monitoring Processor Performance Unallowed Reverse Engagement
  • P1DDC DODGE Transmission Control Module Monitoring Processor Performance Unallowed Reverse Engagement
  • P1DDC FIAT Transmission Control Module Monitoring Processor Performance Unallowed Reverse Engagement
  • P1DDC JEEP Transmission Control Module Monitoring Processor Performance Unallowed Reverse Engagement

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P1DDC Comments

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