AutoCodes – Cadillac – B3620 Cadillac

B3620 Cadillac Code - Head-Up Display Information Up Switch Circuit

Quick Answer

The Head-Up Display (HUD) monitors the HUD information-up switch signal circuit in order to perform the switch functions. Common causes include Faulty Head-Up Display Information Up Switch, Head-Up Display Information Up Switch harness is open or shorted, Head-Up Display Information Up Switch 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: B3620 Cadillac indicates Head-Up Display Information Up Switch Circuit.
Common causes: Common causes include Faulty Head-Up Display Information Up Switch, Head-Up Display Information Up Switch harness is open or shorted, Head-Up Display Information Up Switch 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 399

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 Mar 10, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3620 Cadillac Description

The Head-Up Display (HUD) monitors the HUD information-up switch signal circuit in order to perform the switch functions. When the HUD information-up switch is depressed and the ignition is in the RUN position, the switch signal to the HUD is low. When the HUD detects that the HUD information-up switch signal is low for greater than 60 seconds, the Diagnostic Trouble Code (DTC) B3620 sets.

OBDII Code B3620 Cadillac - Head-Up Display Information Up Switch Circuit - AutoCodes.com — B3620 Cadillac Code - Head-Up Display Information Up Switch Circuit

What does this mean?

What are the Possible Causes of the DTC B3620 Cadillac?

Faulty Head-Up Display Information Up Switch
Head-Up Display Information Up Switch harness is open or shorted
Head-Up Display Information Up Switch circuit poor electrical connection

How to Fix the DTC B3620 Cadillac?

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 B3620 Cadillac 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.

Frequently Asked Questions about B3620 Cadillac Code

1. What are common symptoms of OBDII code B3620 in a Cadillac related to the Head-Up Display Information Up Switch Circuit?

- Common symptoms include the Head-Up Display not responding to input from the information up switch, resulting in the inability to adjust displayed information.

2. What are possible causes of OBDII code B3620 in a Cadillac?

- Possible causes include a faulty information up switch, wiring issues in the circuit, or a malfunction in the Head-Up Display control module.

3. How can I diagnose the cause of OBDII code B3620 in my Cadillac?

- To diagnose the issue, you can start by checking the wiring connections related to the Head-Up Display information up switch and inspecting the switch itself for any visible damage.

4. Can I repair OBDII code B3620 in my Cadillac on my own?

- If you have experience with automotive electrical systems, you may be able to repair this issue on your own by replacing the faulty information up switch or addressing any wiring issues.

5. Is it safe to continue driving my Cadillac with OBDII code B3620 present?

- It is generally safe to drive your Cadillac with this code, but it is recommended to address the issue as soon as possible to restore full functionality to the Head-Up Display.

6. How much does it typically cost to repair OBDII code B3620 in a Cadillac?

- The cost of repairing this code can vary depending on the specific cause of the issue, but it may involve replacing the information up switch or repairing any damaged wiring. Costs can range from a few hundred to over a thousand dollars.

7. Can resetting the OBDII system clear the B3620 trouble code in a Cadillac?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear once the problem is detected again.

8. Are there any preventive measures I can take to avoid OBDII code B3620 in my Cadillac?

- Regularly inspecting the Head-Up Display controls and addressing any issues promptly can help prevent the occurrence of OBDII code B3620 in your Cadillac.

9. How long does it typically take to repair OBDII code B3620 in a Cadillac?

- The repair time can vary depending on the complexity of the issue and the availability of parts, but it may take a few hours to a full day to diagnose and repair the problem.

10. Can a mechanic easily identify the cause of OBDII code B3620 in a Cadillac?

- A qualified mechanic with experience in diagnosing automotive electrical issues should be able to pinpoint the cause of OBDII code B3620 by conducting a thorough inspection and testing of the relevant components.