AutoCodes – Chrysler – P1D98 Chrysler

P1D98 Chrysler 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 Chrysler 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 1,703

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

What does this mean?

What are the Possible Causes of the DTC P1D98 Chrysler?

Faulty Transmission Internal Components

How to Fix the DTC P1D98 Chrysler?

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 Chrysler 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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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 Chrysler Code

1. What does the OBDII code P1D98 mean on a Chrysler vehicle?

The P1D98 code indicates an "Incorrect Gear Ratio" caused by a possible defect in Clutch 'B' or 'D' within the transmission system.

2. What are the common symptoms of the P1D98 code?

Symptoms may include poor shifting, slipping gears, transmission overheating, reduced fuel efficiency, or the vehicle going into limp mode.

3. What causes the P1D98 code to appear?

Common causes include a faulty transmission solenoid, worn clutch components, low or contaminated transmission fluid, or a defective transmission control module (TCM).

4. How can I diagnose the P1D98 code on my Chrysler?

Diagnose by scanning the vehicle with an OBDII scanner, inspecting the transmission fluid condition, and checking for mechanical issues, such as worn clutches or faulty solenoids.

5. Can low transmission fluid trigger the P1D98 code?

Yes, low or contaminated transmission fluid can cause improper clutch operation, leading to an incorrect gear ratio and triggering the P1D98 code.

6. Is it safe to drive with the P1D98 code active?

Driving with this code is not recommended, as it can cause further damage to the transmission and lead to unsafe driving conditions.

7. How is the P1D98 code fixed?

Repairs may include replacing faulty solenoids, repairing or replacing worn clutch components, flushing and refilling transmission fluid, or updating/reprogramming the TCM.

8. Can a bad transmission control module (TCM) cause the P1D98 code?

Yes, a malfunctioning TCM can misinterpret gear ratios or fail to control clutch operation properly, triggering the P1D98 code.

9. How much does it cost to repair the P1D98 code?

Repair costs can vary widely, ranging from $150 for fluid changes to over $1,500 for clutch or TCM replacements, depending on the severity of the issue.

10. Can resetting the OBDII system clear the P1D98 code permanently?

Clearing the code may reset the check engine light temporarily, but the underlying issue must be repaired to prevent the code from returning.