P1D9F - Incorrect Gear Ratio Clutch 'D' Or 'E' Defective

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

  • Faulty Transmission Internal Components

Possible symptoms

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

P1d9f Description

The Transmission Control Module (TCM) monitors for conditions which lead to an unexpected transmission gear ratio (e.g. slipping clutches, hydraulic or mechanical defects, etc.). The TCM compares the actual gear ratio (i.e. the ratio of input speed to output speed) to a minimum and maximum calibrated gear ratio value. The TCM performs this comparison while driving in a fixed gear, during gear engagement, and during shifting from one gear to another.
OBDII Code P1d9f - Incorrect Gear Ratio Clutch 'D' Or 'E' Defective - AutoCodes.com

P1D9F Information for specific makes

  • P1D9F CHRYSLER Incorrect Gear Ratio Clutch 'D' Or 'E' Defective
  • P1D9F DODGE Incorrect Gear Ratio Clutch 'D' Or 'E' Defective
  • P1D9F FIAT Incorrect Gear Ratio Clutch 'D' Or 'E' Defective
  • P1D9F JEEP Incorrect Gear Ratio Clutch 'D' Or 'E' Defective

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P1D9F Comments

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