AutoCodes – Generic – B0997

B0997 Code - Auxiliary Electronic Control Unit Performance

Quick Answer

The Info Display Module monitors itself for internal failures and reports its condition to the Human Machine Interface Control Module when requested. Common causes include Faulty Info Display Module (Radio Controls) (Radio Assembly), Info Display Module harness is open or shorted, Info Display 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: B0997 indicates Auxiliary Electronic Control Unit Performance.
Common causes: Common causes include Faulty Info Display Module (Radio Controls) (Radio Assembly), Info Display Module harness is open or shorted, Info Display 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 339

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 18, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B0997 Description

The Info Display Module monitors itself for internal failures and reports its condition to the Human Machine Interface Control Module when requested. The info display also reports electronic identification information when requested. The Diagnostic Trouble Code (DTC) will be set if the Info Display Module has reported identification information that differs from the information calibrated in the Human Machine Interface Control Module or if the Info Display Module reports an internal malfunction.
*The Info Display Module and radio controls can be separate components from the radio or combined with the radio into one assembly.

OBDII Code B0997 - Auxiliary Electronic Control Unit Performance - AutoCodes.com — B0997 Code - Auxiliary Electronic Control Unit Performance

What does this mean?

What are the Possible Causes of the DTC B0997?

Faulty Info Display Module (Radio Controls) (Radio Assembly)
Info Display Module harness is open or shorted
Info Display Module circuit poor electrical connection

How to Fix the DTC B0997?

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 B0997 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.

Need more information about the B0997 code?

Need more information on how to fix the B0997 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0997 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B0997 Buick — Auxiliary Electronic Control Unit Performance
B0997 Cadillac — Auxiliary Electronic Control Unit Performance
B0997 Chevrolet — Auxiliary Electronic Control Unit Performance
B0997 GMC — Auxiliary Electronic Control Unit Performance

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.