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P1694 Dodge Code - No Messages Received From The Powertrain Control Module

Quick Answer

The P1694 diagnostic trouble code (DTC) for Dodge vehicles indicates that the Powertrain Control Module (PCM) has not received any messages from a specific module within the vehicle. Common causes include Faulty wiring or connections between the PCM and the specific module, Defective PCM or module, Corrosion or damage to communication lines. 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
P1694 Dodge indicates No Messages Received From The Powertrain Control Module.
Common causes
Common causes include Faulty wiring or connections between the PCM and the specific module, Defective PCM or module, Corrosion or damage to communication lines.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P1694 Dodge Description

The P1694 diagnostic trouble code (DTC) for Dodge vehicles indicates that the Powertrain Control Module (PCM) has not received any messages from a specific module within the vehicle. This communication error can have significant implications for the vehicle's performance and functionality. The PCM is essentially the brain of the vehicle, responsible for controlling various systems such as the engine, transmission, and emissions. When the PCM does not receive messages from a specific module, it can lead to a loss of communication and coordination between different systems, resulting in various performance issues.

OBDII Code P1694 Dodge - No Messages Received From The Powertrain Control Module
P1694 Dodge Code - No Messages Received From The Powertrain Control Module

Common Causes of P1694 Dodge

  1. Faulty wiring or connections between the PCM and the specific module
  2. Defective PCM or module
  3. Corrosion or damage to communication lines
  4. Software or firmware issues
  5. Electrical interference or grounding problems

Symptoms of P1694 Dodge

  1. Reduced power and acceleration
  2. Rough idling or stalling
  3. Poor fuel efficiency
  4. Difficulty shifting gears
  5. Erratic behavior of engine or transmission

How to Fix P1694 Dodge

  1. Perform a thorough inspection of wiring and connections between the PCM and the specific module.
  2. Check for any signs of corrosion or damage to communication lines and repair or replace as needed.
  3. Test the PCM and module for faults using a diagnostic scanner and replace any defective components.
  4. Update or reflash the software or firmware of the PCM and module to ensure compatibility and proper communication.
  5. Clear the DTC and perform a test drive to verify that the issue has been resolved.

Cost to Fix P1694 Dodge

The typical repair costs for addressing a P1694 DTC can vary depending on the specific cause of the issue. In general, the cost of parts for wiring repairs or component replacement can range from $100 to $500, while labor costs can vary from $100 to $300. Overall, the total repair cost can range from $200 to $800 or more, depending on the extent of the repairs needed. It is advisable to consult with a professional mechanic or auto repair shop to get an accurate estimate based on the specific circumstances of your vehicle. Labor rates at auto repair shops can vary, so it's essential to consider factors such as location, vehicle make and model, and the complexity of the repair when estimating costs.

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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 P1694 Dodge Code

1. What are the common symptoms of OBDII code P1694 in a Dodge vehicle?

- Common symptoms include the check engine light being illuminated, difficulty starting the vehicle, and issues with engine performance.

2. What does the OBDII code P1694 "No Messages Received From The Powertrain Control Module" indicate in a Dodge?

- This code indicates a communication error between the Powertrain Control Module (PCM) and other control modules in the vehicle.

3. What are the possible causes of OBDII code P1694 in a Dodge?

- Possible causes include a faulty PCM, wiring issues, loose connections, or a malfunctioning communication network within the vehicle.

4. How can I diagnose the OBDII code P1694 in my Dodge?

- Diagnosis typically involves checking for loose connections, inspecting the wiring harness, testing the PCM, and using a diagnostic scanner to communicate with the modules.

5. Can I still drive my Dodge with the OBDII code P1694 present?

- It is not recommended to drive the vehicle with this code present, as it can lead to potential performance issues or further damage if left unaddressed.

6. What are some repair tips for resolving OBDII code P1694 in a Dodge?

- Repair tips may include checking and repairing any damaged wiring, ensuring proper connections, resetting the PCM, or replacing the PCM if necessary.

7. Will resetting the PCM clear the OBDII code P1694 in a Dodge?

- Resetting the PCM may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to return.

8. How much does it typically cost to repair OBDII code P1694 in a Dodge?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from a simple wiring repair to a PCM replacement, potentially costing several hundred dollars.

9. Can a DIY enthusiast fix OBDII code P1694 in a Dodge?

- Some simple repairs like checking connections and inspecting wiring can be done by a DIY enthusiast, but more complex issues may require professional diagnosis and repair.

10. How urgent is it to address OBDII code P1694 in a Dodge?

- It is recommended to address this code as soon as possible to prevent potential engine performance issues or further damage to the vehicle.

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