AutoCodes – Generic – P1D98

P1D98 Code - Incorrect Gear Ratio Clutch 'B' Or 'D' 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: P1D98 indicates Incorrect Gear Ratio Clutch 'B' Or 'D' 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 3,269

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 P1D98 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 P1D98 - Incorrect Gear Ratio Clutch 'B' Or 'D' Defective - AutoCodes.com — P1D98 Code - Incorrect Gear Ratio Clutch 'B' Or 'D' Defective

What does this mean?

What are the Possible Causes of the DTC P1D98?

Faulty Transmission Internal Components

How to Fix the DTC P1D98?

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 P1D98 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?

Get the P1D98 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1D98 Chrysler — Incorrect Gear Ratio Clutch 'B' Or 'D' Defective
P1D98 Dodge — Incorrect Gear Ratio Clutch 'B' Or 'D' Defective
P1D98 Fiat — Incorrect Gear Ratio Clutch 'B' Or 'D' Defective
P1D98 Jeep — Incorrect Gear Ratio Clutch 'B' Or 'D' Defective

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 P1D98 Code

1. What are some common symptoms of OBDII code P1D98 (Incorrect Gear Ratio Clutch 'B' Or 'D' Defective)?

- Symptoms may include issues with shifting gears, transmission slipping, decreased fuel efficiency, and possible check engine light illumination.

2. What can cause OBDII code P1D98 to trigger?

- This code is typically triggered by a malfunction in the clutch 'B' or 'D' of the transmission, indicating an incorrect gear ratio.

3. How serious is OBDII code P1D98?

- This code should be addressed promptly as it can lead to further damage to the transmission if left unresolved.

4. What are some possible repair options for OBDII code P1D98?

- Repair options may include inspecting and repairing the clutch 'B' or 'D' components, checking for any debris or blockages in the transmission system, and resetting the trouble code.

5. Can I continue driving with OBDII code P1D98 present?

- It is not recommended to continue driving with this code active, as it may cause further damage to the transmission system.

6. How can I prevent OBDII code P1D98 from occurring?

- Regular maintenance of the transmission system, including fluid checks and replacements, can help prevent issues that may trigger this code.

7. Is it possible to clear OBDII code P1D98 without repairing the issue?

- While clearing the code may temporarily turn off the check engine light, it is important to address the underlying problem to prevent future issues.

8. How can a mechanic diagnose OBDII code P1D98?

- A mechanic can use a diagnostic scanner to retrieve the code, inspect the transmission system for any visible damages, and conduct further tests to pinpoint the exact cause.

9. Can a DIY enthusiast repair OBDII code P1D98 at home?

- Repairing this code may require specialized tools and knowledge of transmission systems, so it is recommended to seek professional help for proper diagnosis and repair.

10. How much does it typically cost to repair OBDII code P1D98?

- The cost of repairing this code can vary depending on the extent of the damage and the specific repair needed, so it is best to consult a mechanic for an accurate estimate.