P1D9B - Incorrect Gear Ratio Clutch 'A' Or 'E' Defective

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
Comments  |  Add Comment

Possible causes

  • Faulty Transmission Internal Components

Possible symptoms

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

P1d9b 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 P1d9b - Incorrect Gear Ratio Clutch 'A' Or 'E' Defective - AutoCodes.com

P1D9B Information for specific makes

  • P1D9B CHRYSLER Incorrect Gear Ratio Clutch 'A' Or 'E' Defective
  • P1D9B DODGE Incorrect Gear Ratio Clutch 'A' Or 'E' Defective
  • P1D9B FIAT Incorrect Gear Ratio Clutch 'A' Or 'E' Defective
  • P1D9B JEEP Incorrect Gear Ratio Clutch 'A' Or 'E' Defective

Need more help?

Get the P1d9b code diagnosed by a professional: Find a repair shop in your area

Related Information

P1D9B Comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P1d9b code? Have you replaced any parts?
Any information is appreciated. Thanks
Top ⇧