AutoCodes – Dodge – P1D99 Dodge

P1D99 Dodge Code - Incorrect Gear Ratio Clutch 'B' Or 'E' Defective

Quick Answer

The Transmission Control Module (TCM) monitors for conditions which lead to an unexpected transmission gear ratio (e.g. Common causes include Faulty Transmission Internal Components. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1D99 Dodge indicates Incorrect Gear Ratio Clutch 'B' Or 'E' Defective.
Common causes: Common causes include Faulty Transmission Internal Components.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 8,359

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 19, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1D99 Dodge 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 P1D99 Dodge - Incorrect Gear Ratio Clutch 'B' Or 'E' Defective - AutoCodes.com — P1D99 Dodge Code - Incorrect Gear Ratio Clutch 'B' Or 'E' Defective

What does this mean?

What are the Possible Causes of the DTC P1D99 Dodge?

Faulty Transmission Internal Components

How to Fix the DTC P1D99 Dodge?

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1D99 Dodge code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1D99 Dodge Code

1. What are common symptoms of OBDII code P1D99 in a Dodge indicating an Incorrect Gear Ratio Clutch 'B' or 'E' Defective issue?

- Common symptoms include rough shifting, delayed engagement when shifting gears, and potential transmission slipping.

2. What are the possible causes of OBDII code P1D99 in a Dodge related to Incorrect Gear Ratio Clutch 'B' or 'E' Defective?

- The code may be triggered by a defective clutch 'B' or 'E', issues with the transmission control module, low transmission fluid, or mechanical problems within the transmission.

3. How can I diagnose the OBDII code P1D99 in a Dodge indicating an Incorrect Gear Ratio Clutch 'B' or 'E' Defective problem?

- Diagnosis typically involves using a professional OBDII scanner to read the code, checking the transmission fluid level and condition, and inspecting the clutch components for wear or damage.

4. Can driving with the OBDII code P1D99 in a Dodge indicating an Incorrect Gear Ratio Clutch 'B' or 'E' Defective problem cause further damage?

- Continuing to drive with this issue can potentially cause further damage to the transmission and other related components, leading to more expensive repairs.

5. How can I reset the OBDII code P1D99 in a Dodge related to Incorrect Gear Ratio Clutch 'B' or 'E' Defective after making repairs?

- After addressing the underlying cause of the code, you can reset it using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes to clear the error code.

6. What are some repair tips for fixing the OBDII code P1D99 in a Dodge indicating an Incorrect Gear Ratio Clutch 'B' or 'E' Defective problem?

- Repair tips may include checking and replacing the clutch 'B' or 'E', inspecting and repairing any damaged wiring or connectors, and ensuring proper transmission fluid levels and quality.

7. Is it advisable to attempt DIY repairs for the OBDII code P1D99 in a Dodge related to Incorrect Gear Ratio Clutch 'B' or 'E' Defective?

- While some basic inspections and maintenance tasks can be done by DIY enthusiasts, complex transmission repairs should be handled by experienced mechanics to avoid further complications.

8. How much does it typically cost to repair the OBDII code P1D99 in a Dodge due to an Incorrect Gear Ratio Clutch 'B' or 'E' Defective issue?

- Repair costs can vary depending on the extent of damage and the specific repairs needed, but they can range from a few hundred dollars for minor issues to over a thousand dollars for major transmission repairs.

9. Are there any preventive measures to avoid encountering the OBDII code P1D99 in a Dodge related to Incorrect Gear Ratio Clutch 'B' or 'E' Defective in the future?

- Regularly servicing the transmission, checking transmission fluid levels, and addressing any unusual shifting behavior promptly can help prevent this issue from occurring.