AutoCodes – Dodge – U1746 Dodge

U1746 Dodge Code - Amplifier Module Missing Message

Quick Answer

The Amplifier Module receives pre-amplified audio signals from the Radio/Entertainment Telematics Module (ETM) and boosts them to drive the speakers. Common causes include Faulty Amplifier Module, Amplifier Module harness is open or shorted, Amplifier Module 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: U1746 Dodge indicates Amplifier Module Missing Message.
Common causes: Common causes include Faulty Amplifier Module, Amplifier Module harness is open or shorted, Amplifier Module 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 92

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 Nov 05, 2025

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code U1746 Dodge Description

The Amplifier Module receives pre-amplified audio signals from the Radio/Entertainment Telematics Module (ETM) and boosts them to drive the speakers. The ETM identifies whether the vehicle has an external or internal amplifier and, if external, disables its own speaker outputs, sending only audio input signals to the amplifier. All balance and fade adjustments are controlled by the ETM and transmitted to the Amplifier over the CAN bus, allowing the module to manage sound distribution across the vehicle’s multiple speakers (up to 12 channels in Premium 2 systems).

OBDII Code U1746 Dodge - Amplifier Module Missing Message - AutoCodes.com — U1746 Dodge Code - Amplifier Module Missing Message

What does this mean?

What are the Possible Causes of the DTC U1746 Dodge?

Faulty Amplifier Module
Amplifier Module harness is open or shorted
Amplifier Module circuit poor electrical connection

How to Fix the DTC U1746 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 U1746 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.