P1693 – Dodge DTC

Dodge DTC P1693 – DTC Detected In ECM Or PCM

DTC P1693 meaning on Dodge

1. DTC P1693 is a diagnostic trouble code that indicates a communication error between the ECM (Engine Control Module) or PCM (Powertrain Control Module) and the TCM (Transmission Control Module) in Dodge vehicles.

Dodge DTC P1693 symptoms

• Check Engine Light (CEL) illuminated on the dashboard.
• Transmission shifting issues or erratic shifting behavior.
• Vehicle may go into “limp mode” where it operates with limited functionality.

Dodge DTC P1693 causes

• Faulty wiring or connectors between the ECM/PCM and TCM.
• Defective ECM/PCM or TCM.
• Software issues within the control modules.

Dodge DTC P1693 seriousness

1. If left unresolved, DTC P1693 can lead to drivability issues and potential transmission damage.
2. It is important to address this code promptly to prevent further complications.

How to diagnose DTC P1693 on Dodge

1. Use a diagnostic scanner to retrieve the specific fault codes stored in the ECM/PCM and TCM.
2. Inspect the wiring harness and connectors for any signs of damage or corrosion.
3. Perform a thorough visual inspection of the control modules for any physical damage.

How to fix DTC P1693 on Dodge

1. Repair or replace any damaged wiring or connectors between the ECM/PCM and TCM.
2. If the control modules are faulty, they may need to be replaced and reprogrammed.
3. Update the software in the control modules to the latest version.

How to erase DTC P1693 on Dodge

1. After addressing the underlying issue causing DTC P1693, use a diagnostic scanner to clear the fault codes stored in the ECM/PCM and TCM.
2. Ensure that the repair has been successful by driving the vehicle and monitoring for any recurrence of the code.

Recommended tools for Dodge diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.