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AutoCodes - Generic - P1D9C

P1D9C Code - Incorrect Gear Ratio Clutch 'A' Or 'C' Defective

- Code Popularity: 2,154 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1D9C?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Transmission Internal Components
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How to Fix the DTC P1D9C?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1D9C code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code P1D9C 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 P1D9C - Incorrect Gear Ratio Clutch 'A' Or 'C' Defective - AutoCodes.com
P1D9C Code - Incorrect Gear Ratio Clutch 'A' Or 'C' Defective

Need More Information on the Code?

Need more information on how to fix the P1D9C code? Get Access to Factory Service Manuals

Information for Specific Makes

  • P1D9C Chrysler Incorrect Gear Ratio Clutch 'A' Or 'C' Defective
  • P1D9C Dodge Incorrect Gear Ratio Clutch 'A' Or 'C' Defective
  • P1D9C Fiat Incorrect Gear Ratio Clutch 'A' Or 'C' Defective
  • P1D9C Jeep Incorrect Gear Ratio Clutch 'A' Or 'C' Defective

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Code P1D9C comments

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