[SOLVED] Dodge P1698 Code: Pcm Issue No Tcm Communication Fix

The OBD code P1698 for Dodge indicates a communication error between the Transmission Control Module (TCM) and Powertrain Control Module (PCM).

Symptoms include the Engine Light being ON.

Causes may include a faulty TCM, open/shorted TCM harness, poor electrical connection, faulty PCM, or low battery voltage.

This issue is serious as it affects transmission operation.

A possible fix is to inspect and repair any damaged wiring or connectors between the TCM and PCM.

Repair Importance Level	10.0 (Out of 10)
Estimated Repair Time	Approximately 1.0 hour
Repair Difficulty Level	10.0 (Out of 10)

Symptoms of the Dodge p1698 OBD Code

The Dodge fault code P1698 indicates a problem with the ECM communication circuit.

Symptoms: Engine Light ON.
Possible intermittent nostart condition.
Transmission may go into limp mode with limited gear selection.
Transmission may shift harshly.
Engine may stall unexpectedly.

Causes of the Dodge p1698 OBD Code

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Possible reasons for Dodge fault code p1698 include communication issues between the ECM and TCM.

P1698 can be caused by a faulty Transmission Control Module (TCM).
A Transmission Control Module harness that is open or shorted.
A Transmission Control Module circuit with poor electrical connection.
A faulty Powertrain Control Module (PCM).
Low battery voltage.

Fixing Dodge Error Code p1698 Step By Step

Repair the wiring harness between the PCM and the transmission control module to address Dodge code P1698.

To fix the Dodge OBDII code p1698, start by reviewing the possible causes mentioned above.
Visually examine the wiring harness and connectors related to the transmission control module (TCM).
Check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
Test the TCM for proper operation and communication.
If necessary, reprogram or replace the TCM to address the p1698 fault code.

Cost Of Fixing Dodge p1698 Fault Code

The repair for Dodge fault code P1698 may involve diagnosing and fixing a communication issue.

The cost to diagnose and fix the Dodge OBD code P1698 typically ranges from $75 to $150, based on an estimated repair time of 1. 0 hour.

Factors like shop rates and complexity of the issue can influence the final cost.

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Details of the Dodge p1698 OBD Code

Dodge fault code P1698 relates to the problem with the PCM fault line.

Dodge OBD code P1698 means that there is a problem with the PCM (Powertrain Control Module) communication bus.

This code is triggered when the PCM is not receiving a bus message from the Transmission Control Module (TCM).

The communication bus involved in this case is the CCD (Chrysler Collision Detection) bus, which is used by various modules in the vehicle to communicate with each other.

Mechanic’s Tech Notes

Dodge fault code p1698 indicates a problem with the PCM’s communication circuit to the TCM.

OBDII code P1698 in a Dodge typically indicates a problem with the TCM (Transmission Control Module) communication circuit.

To diagnose, check TCM power and ground using a multimeter.

Use a scan tool to confirm TCM communication over the CAN network.

Visually inspect wiring harnesses and connectors for damage, focusing on broken, bent, or corroded pins.

Reflash the TCM if necessary.

This process helps ensure proper communication between the TCM and other modules in the vehicle.

FAQ

1. What does OBD code P1698 mean in a Dodge vehicle?

OBD code P1698 in a Dodge indicates a problem with the Transmission Control Module (TCM). Check TCM, wiring, connectors, and PCM for issues causing the fault.

2. What are the common symptoms associated with OBD code P1698 in a Dodge vehicle?

Common symptoms of OBD code P1698 in a Dodge vehicle include Engine Light ON, caused by issues with TCM, PCM, wiring, or low battery voltage. Fix: Inspect and repair affected components.

3. How can I diagnose and repair OBD code P1698 in my Dodge vehicle?

Diagnose and repair OBD code P1698 in a Dodge: Symptoms Engine Light ON. Causes Faulty TCM, TCM harness issues, faulty PCM, low battery. Fix Inspect wiring and connectors.

Wrap Up

If your Dodge is displaying OBD code P1698 along with transmission shifting issues, it could be caused by a faulty Transmission Control Module (TCM), damaged wiring harnesses, or poor electrical connections within the transmission system.

To address Dodge OBD code P1698, check the TCM for any signs of damage or corrosion, inspect the wiring harness for any frayed or broken wires, and ensure all electrical connectors are securely attached.

Additionally, perform a thorough diagnostic scan to pinpoint the exact source of the transmission communication error.