AutoCodes – Generic – P1DA6

P1DA6 Code - Incorrect Gear Ratio Clutch 'A' 'C' 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: P1DA6 indicates Incorrect Gear Ratio Clutch 'A' 'C' 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 1,531

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 21, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1DA6 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 P1DA6 - Incorrect Gear Ratio Clutch 'A' 'C' Or 'D' Defective - AutoCodes.com — P1DA6 Code - Incorrect Gear Ratio Clutch 'A' 'C' Or 'D' Defective

What does this mean?

What are the Possible Causes of the DTC P1DA6?

Faulty Transmission Internal Components

How to Fix the DTC P1DA6?

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 P1DA6 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 P1DA6 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1DA6 Acura — Voltage Control Unit V1 Voltage Sensor Range/Performance
P1DA6 Chrysler — Incorrect Gear Ratio Clutch 'A' 'C' Or 'D' Defective
P1DA6 Dodge — Incorrect Gear Ratio Clutch 'A' 'C' Or 'D' Defective
P1DA6 Fiat — Incorrect Gear Ratio Clutch 'A' 'C' Or 'D' Defective
P1DA6 Honda — Voltage Control Unit V1 Voltage Sensor Range/Performance
P1DA6 Jeep — Incorrect Gear Ratio Clutch 'A' 'C' 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 P1DA6 Code

What does the OBDII code P1DA6 mean?

The P1DA6 code indicates an incorrect gear ratio due to a possible defect in Clutch 'A,' 'C,' or 'D' within the transmission system.

What are the common symptoms of the P1DA6 code?

Symptoms may include the Check Engine Light turning on, harsh or erratic shifting, transmission slipping, or the vehicle going into limp mode.

What causes the P1DA6 code to appear?

The code can be triggered by worn or damaged clutch components, low or dirty transmission fluid, a faulty transmission control module (TCM), or internal transmission issues.

Can driving with the P1DA6 code cause further damage?

Yes, continuing to drive with this code can result in additional damage to the transmission or related components if the issue is not addressed promptly.

How is the P1DA6 code diagnosed?

A mechanic will use a scan tool to retrieve the code, check the transmission fluid condition and level, inspect wiring and connectors, and possibly perform a pressure test or transmission disassembly.

What repairs are needed to fix the P1DA6 code?

Repairs may include replacing damaged clutch components, repairing or replacing the TCM, addressing wiring or connector issues, or performing a transmission rebuild if necessary.

Is the P1DA6 code specific to certain vehicles?

Yes, the P1DA6 code is typically found in vehicles with advanced automated or dual-clutch transmissions, and its specifics may vary by manufacturer.

Can low transmission fluid cause the P1DA6 code?

Yes, low or degraded transmission fluid can cause improper clutch operation and lead to this code being triggered.

Will clearing the P1DA6 code fix the problem?

Clearing the code will only reset the warning temporarily; the underlying issue must be diagnosed and repaired to prevent the code from returning.

How much does it cost to fix the P1DA6 code?

The repair cost varies widely depending on the issue, ranging from $150 for minor fixes like fluid changes to several thousand dollars for major transmission repairs or replacements.