AutoCodes - Generic - U0304

U0304 Code - Software Incompatibility With Gear Shift Control Module 'A'

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3
Table of contents

|U0304 code possible causes

  • Gear Shift Control Module 'A' Programmed With Incorrect Software
  • Faulty Gear Shift Control Module 'A'

|How do I fix the U0304 code?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|Cost of diagnosing the U0304 code

Labor: 1.0

The cost of diagnosing the U0304 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are U0304 code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|U0304 code description

Some devices must be configured with specific software, serial numbers, vehicle options, or other information. If a device was not properly configured after installation that the device may set the appropriate communication Diagnostic Trouble Code (DTC)s. No external circuit diagnosis is involved. The DTC sets when the Gear Shift Control Module 'A' is not configured properly
OBDII Code U0304 - Software Incompatibility With Gear Shift Control Module 'A' -

|Need more information with the U0304 code?

Need more information on how to fix the U0304 code? Get Access to Factory Service Manuals

|Need help with a U0304 code?

Get the U0304 code diagnosed by a professional: Find a repair shop in your area

|U0304 code comments

Help us improve Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the U0304 code? Have you replaced any parts?
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Repair Importance Level: 3
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