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Engine-Codes – Generic – P1698

P1698 Code - PCM Fault No CCD Message From TCM

Quick Answer

The P1698 diagnostic trouble code (DTC) indicates a communication problem between the Powertrain Control Module (PCM) and the Transmission Control Module (TCM). Common causes include Faulty wiring or connectors in the CCD bus, Defective PCM or TCM, Malfunctioning communication network. 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
P1698 indicates PCM Fault No CCD Message From TCM.
Common causes
Common causes include Faulty wiring or connectors in the CCD bus, Defective PCM or TCM, Malfunctioning communication network.
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 06, 2024
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Code P1698 Description

The P1698 diagnostic trouble code (DTC) indicates a communication problem between the Powertrain Control Module (PCM) and the Transmission Control Module (TCM). The CCD (Chrysler Collision Detection) bus is a communication network that allows various modules in the vehicle to exchange data and commands. When the PCM does not receive a message from the TCM over the CCD bus, it triggers the P1698 code.

OBDII Code P1698 - PCM Fault No CCD Message From TCM
P1698 Code - PCM Fault No CCD Message From TCM

Common Causes of P1698

  1. Faulty wiring or connectors in the CCD bus
  2. Defective PCM or TCM
  3. Malfunctioning communication network
  4. Software glitches or updates
  5. Electrical interference or corrosion in the communication system

Symptoms of P1698

  1. Harsh shifting or erratic transmission behavior
  2. Reduced fuel efficiency
  3. Engine hesitation or stalling
  4. Check engine light illuminated
  5. Vehicle entering limp mode

How to Fix P1698

  1. Perform a thorough inspection of the CCD bus wiring and connectors for damage or corrosion.
  2. Test the PCM and TCM communication using diagnostic tools to identify any faults.
  3. Update software in the PCM and TCM to the latest versions to address any known issues.
  4. Replace the PCM or TCM if they are determined to be faulty.
  5. Clear the code and perform a test drive to ensure the communication between modules is restored.

Cost to Fix P1698

The typical repair costs for addressing a P1698 code can range from $200 to $600, depending on the extent of the issue and the parts that need to be replaced. This estimate includes parts and labor. However, specific costs can vary based on factors such as location, vehicle make and model, and the expertise of the auto repair shop. It's advisable to consult with a professional mechanic for a more accurate estimate tailored to your specific situation.

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Code P1698 Information for Specific Makes

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.

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