P1644 Dodge 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 Dodge 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.
Code P1644 Dodge Description
What are the Possible Causes of the DTC P1644 Dodge?
- 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 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 P1644 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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Frequently Asked Questions about P1644 Dodge Code
1. What does the OBDII code P1644 mean for a Dodge vehicle?
P1644 indicates an "Incorrect Variant/Configuration," meaning the vehicle's control module has detected a mismatch or improper configuration in its programming.
2. What are the common symptoms of the P1644 code?
Common symptoms include an illuminated check engine light, reduced engine performance, erratic transmission behavior, or trouble starting the vehicle.
3. What causes the P1644 code to appear in a Dodge?
The most common causes are incorrect control module programming, a software mismatch, or a replacement module that hasn’t been properly configured.
4. Can a loose connection trigger the P1644 code?
Yes, a poor electrical connection or a damaged wiring harness associated with the control module can contribute to this error code.
5. How do you diagnose a P1644 code on a Dodge vehicle?
A professional scan tool is used to verify the code and check for related codes. The technician will also inspect the control module’s configuration and wiring for issues.
6. Is a faulty PCM a possible cause of the P1644 code?
Yes, a malfunctioning Powertrain Control Module (PCM) or Engine Control Module (ECM) can cause this code if it cannot properly communicate or store the correct configuration.
7. Can the P1644 code be fixed with a software update?
In many cases, a software update or reprogramming of the control module can resolve the issue if the problem is related to incorrect programming.
8. Is the P1644 code specific to Dodge vehicles?
No, while it can appear in Dodge vehicles, this code or a similar one may also appear in other makes with the same control module issues.
9. What should I check if the P1644 code persists after repairs?
Recheck the control module’s configuration, ensure all software updates were applied correctly, and inspect the wiring and connectors for any overlooked damage.
10. Can I drive my Dodge with a P1644 code?
While the vehicle may still function, driving with this code is not recommended as it can lead to performance issues and potentially damage other components.
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