AutoCodes – Chevrolet – B2964 Chevrolet

B2964 Chevrolet Code - Key In Ignition Circuit High

Quick Answer

The Body Control Module (BCM) uses a key in ignition input in order to control certain features in the vehicle. Common causes include Faulty Ignition Switch, Ignition Switch harness is open or shorted, Ignition 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: B2964 Chevrolet indicates Key In Ignition Circuit High.
Common causes: Common causes include Faulty Ignition Switch, Ignition Switch harness is open or shorted, Ignition 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 7,747

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 Feb 20, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2964 Chevrolet Description

The Body Control Module (BCM) uses a key in ignition input in order to control certain features in the vehicle. These features are in the following systems: Content Theft Deterrent (if equipped), Audible Warnings, and Automatic Door Locks.
The key in the ignition input circuit is grounded when you fully insert the ignition key into the ignition switch. This, in turn, pulls the BCM key in ignition input low.

OBDII Code B2964 Chevrolet - Key In Ignition Circuit High - AutoCodes.com — B2964 Chevrolet Code - Key In Ignition Circuit High

What does this mean?

What are the Possible Causes of the DTC B2964 Chevrolet?

Faulty Ignition Switch
Ignition Switch harness is open or shorted
Ignition Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B2964 Chevrolet?

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 B2964 Chevrolet 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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Need more information on how to fix the B2964 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2964 Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 B2964 Chevrolet Code

1. What does the OBDII code B2964 mean on a Chevrolet?

B2964 indicates a "Key In Ignition Circuit High" fault, meaning the vehicle's system has detected an issue with the key-in-ignition circuit, such as a high voltage or malfunction.

2. What are the common symptoms of code B2964?

Symptoms may include the key-in-ignition chime not working, difficulty removing the key, or the car not detecting when the key is inserted.

3. What causes the B2964 code to appear?

Common causes include a faulty key-in-ignition switch, damaged wiring or connectors in the ignition circuit, or a malfunctioning body control module (BCM).

4. Can I still drive my Chevrolet with the B2964 code?

Yes, you can usually drive with this code, but it may lead to inconvenience, such as the chime not working or the key being difficult to remove.

5. How is the B2964 code diagnosed?

A mechanic will check the key-in-ignition switch, inspect the wiring and connectors for damage, and use a scan tool to test the body control module for faults.

6. How do you fix the B2964 code on a Chevrolet?

Repairs may involve replacing the key-in-ignition switch, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the BCM if necessary.

7. Can a weak car battery cause the B2964 code?

A weak battery is unlikely to directly cause this code, but electrical issues related to low voltage could exacerbate problems in the ignition circuit.

8. How much does it cost to fix the B2964 code?

The cost varies depending on the repair needed, ranging from $50 for minor wiring fixes to $300+ for replacing the ignition switch or BCM.

9. Can I fix the B2964 code myself?

If you're experienced with car electronics, you can inspect the wiring and connectors or replace the key-in-ignition switch. For BCM issues, professional assistance is recommended.

10. Does clearing the code with a scan tool fix the problem?

Clearing the code may temporarily remove it, but the underlying issue needs to be resolved to prevent the code from returning.