AutoCodes – Dodge – P0683 Dodge

P0683 Dodge Code - Glow Plug Module Control To ECM Communication Circuit Fault

Quick Answer

The Engine Control Module (ECM) monitors the Glow Plug Control Module (GPCM). Common causes include Faulty Glow Plug Control Module (GPCM), GPCM harness is open or shorted, GPCM 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: P0683 Dodge indicates Glow Plug Module Control To ECM Communication Circuit Fault.
Common causes: Common causes include Faulty Glow Plug Control Module (GPCM), GPCM harness is open or shorted, GPCM 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.

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Code Popularity 5,568

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 05, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P0683 Dodge Description

The Engine Control Module (ECM) monitors the Glow Plug Control Module (GPCM). The ECM sets the OBDII code when can not communicate with the Glow Plug Control Module.

OBDII Code P0683 Dodge - Glow Plug Module Control To ECM Communication Circuit Fault - AutoCodes.com — P0683 Dodge Code - Glow Plug Module Control To ECM Communication Circuit Fault

What does this mean?

What are the Possible Causes of the DTC P0683 Dodge?

Faulty Glow Plug Control Module (GPCM)
GPCM harness is open or shorted
GPCM circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0683 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 P0683 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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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.