AutoCodes – Chrysler – P1644 Chrysler

P1644 Chrysler Code - Incorrect Variant/Configuration

Quick Answer

The Diagnostic Trouble Code (DTC) will set if the Transmission Control Module (TCM) detects that the variables that dictate the vehicle application are not present. Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module (TCM) harness is open or shorted, Transmission Control Module (TCM) circuit poor electrical connection. 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: P1644 Chrysler indicates Incorrect Variant/Configuration.
Common causes: Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module (TCM) harness is open or shorted, Transmission Control Module (TCM) circuit poor electrical connection.
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 3,686

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 Mar 21, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1644 Chrysler Description

The Diagnostic Trouble Code (DTC) will set if the Transmission Control Module (TCM) detects that the variables that dictate the vehicle application are not present.

OBDII Code P1644 Chrysler - Incorrect Variant/Configuration - AutoCodes.com — P1644 Chrysler Code - Incorrect Variant/Configuration

What does this mean?

What are the Possible Causes of the DTC P1644 Chrysler?

Faulty Transmission Control Module (TCM)
Transmission Control Module (TCM) harness is open or shorted
Transmission Control Module (TCM) circuit poor electrical connection

How to Fix the DTC P1644 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 P1644 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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Need more information on how to fix the P1644 Chrysler code? Get Access to Factory Service Manuals

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Get the P1644 Chrysler code diagnosed by a professional: Find a repair shop in your area

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 P1644 Chrysler Code

1. What are the common symptoms of OBDII code P1644 in a Chrysler vehicle?

- Common symptoms include engine performance issues, rough idling, poor fuel efficiency, and the illumination of the check engine light.

2. What does the OBDII code P1644 "Incorrect Variant/Configuration" indicate in a Chrysler vehicle?

- This code indicates a discrepancy between the vehicle's actual configuration and the configuration that is expected by the engine control module.

3. What are some possible causes of OBDII code P1644 in a Chrysler vehicle?

- Possible causes include a faulty PCM (Powertrain Control Module), wiring issues, damaged connectors, software glitches, or incorrect module programming.

4. How can I diagnose the OBDII code P1644 in my Chrysler vehicle?

- Diagnosis involves using a scan tool to retrieve the code, checking for any other related codes, inspecting the wiring and connectors, and verifying the vehicle's configuration against the manufacturer's specifications.

5. Can I continue driving my Chrysler vehicle with OBDII code P1644 present?

- It is not recommended to drive the vehicle with this code present, as it can lead to further damage and potential safety hazards. It's best to address the issue promptly.

6. How can I repair OBDII code P1644 in my Chrysler vehicle?

- Repair options include reprogramming the PCM with the correct configuration, repairing any damaged wiring or connectors, and ensuring all modules are communicating properly.

7. Is it possible to clear the OBDII code P1644 without fixing the underlying issue?

- While you can clear the code temporarily, it is likely to return until the root cause of the problem is addressed. Clearing the code without fixing the issue may lead to ongoing performance issues.

8. Can a DIY enthusiast fix OBDII code P1644 in a Chrysler vehicle?

- Depending on your experience and access to tools, some DIY enthusiasts may be able to address the issue by checking and repairing wiring connections or reprogramming the PCM. However, professional help is recommended for more complex repairs.

9. Will OBDII code P1644 cause my Chrysler vehicle to fail an emissions test?

- Yes, this code can cause your vehicle to fail an emissions test due to its impact on engine performance and emissions control systems. It's important to address the issue before undergoing an emissions test.

10. How much can I expect to pay to repair OBDII code P1644 in a Chrysler vehicle?

- Repair costs can vary depending on the root cause of the issue, the need for replacement parts, and labor charges. It's advisable to consult a mechanic for a proper diagnosis and cost estimate.