P1D9D - Incorrect Gear Ratio Clutch 'B' Or 'C' 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)

P1d9d 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 fix gear, during gear engagement, and during shifting from one gear to another.
OBDII Code P1d9d - Incorrect Gear Ratio Clutch 'B' Or 'C' Defective - AutoCodes.com

P1D9D Information for specific makes

  • P1D9D ACURA DC-DC Converter Temperature Sensor Range/Performance
  • P1D9D CHRYSLER Incorrect Gear Ratio Clutch 'B' Or 'C' Defective
  • P1D9D DODGE Incorrect Gear Ratio Clutch 'B' Or 'C' Defective
  • P1D9D FIAT Incorrect Gear Ratio Clutch 'B' Or 'C' Defective
  • P1D9D HONDA DC-DC Converter Temperature Sensor Range/Performance
  • P1D9D JEEP Incorrect Gear Ratio Clutch 'B' Or 'C' Defective

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P1D9D Comments

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