AutoCodes – Cadillac – B3064 Cadillac

B3064 Cadillac Code - Right Front Door Key Unlock Switch Circuit Low

Quick Answer

The Door Lock Cylinder Switches provide a direct ground input to the Body Control Module (BCM) when one of the switches is activated. Common causes include Faulty Right Door Lock Cylinder Switch, Right Door Lock Cylinder Switch harness is open or shorted, Right Door Lock Cylinder 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: B3064 Cadillac indicates Right Front Door Key Unlock Switch Circuit Low.
Common causes: Common causes include Faulty Right Door Lock Cylinder Switch, Right Door Lock Cylinder Switch harness is open or shorted, Right Door Lock Cylinder 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 426

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 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3064 Cadillac Description

The Door Lock Cylinder Switches provide a direct ground input to the Body Control Module (BCM) when one of the switches is activated. This input allows the BCM to detect when the Door Lock Cylinder Switches are turned to the unlock position. When the BCM detects that a Door Lock Cylinder Switch is in the unlock position for greater than one second, it will perform an output command to unlock all the doors. This input is also needed for the optional content theft deterrent system when the keyless entry feature does not unlock the doors. The Diagnostic Trouble Code (DTC) sets when the BCM detects a short to ground in the driver door key switch signal circuit for greater than 60 seconds.

OBDII Code B3064 Cadillac - Right Front Door Key Unlock Switch Circuit Low - AutoCodes.com — B3064 Cadillac Code - Right Front Door Key Unlock Switch Circuit Low

What does this mean?

What are the Possible Causes of the DTC B3064 Cadillac?

Faulty Right Door Lock Cylinder Switch
Right Door Lock Cylinder Switch harness is open or shorted
Right Door Lock Cylinder Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B3064 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 B3064 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 B3064 Cadillac Code

1. What does the OBDII code B3064 mean on a Cadillac?

B3064 indicates an issue with the right front door key unlock switch circuit, specifically a low voltage condition.

2. What are the common symptoms of a B3064 code?

Symptoms may include the inability to unlock the right front door using the key, malfunctioning door lock/unlock functions, or the key fob not responding for that door.

3. What causes the B3064 code to appear?

Common causes include a faulty key unlock switch, damaged wiring or connectors in the circuit, or a malfunctioning door control module.

4. Can I still drive my Cadillac with a B3064 code?

Yes, the code does not affect drivability, but it may cause inconvenience with the door locking and unlocking functions.

5. How do I diagnose a B3064 code?

Start by inspecting the wiring and connectors for damage or corrosion. Test the key unlock switch and check for proper voltage and continuity in the circuit.

6. How can I fix a B3064 code on my Cadillac?

Repairs may involve replacing the key unlock switch, repairing damaged wiring or connectors, or reprogramming the door control module if needed.

7. Is the B3064 code related to the key fob?

Indirectly, yes. If the circuit for the right front door is compromised, the key fob may not properly unlock that door.

8. Can a dead battery cause a B3064 code?

A weak or dead battery can cause electrical issues, but this code is typically related to the specific door circuit rather than the overall power supply.

9. How much does it cost to repair a B3064 code?

Repair costs can vary but generally involve $100-$300 depending on whether the switch, wiring, or module needs replacement.

10. Do I need a professional to fix a B3064 code?

If you're experienced with automotive electrical systems, you may be able to repair it yourself. Otherwise, itâ€™s best to consult a professional mechanic.