AutoCodes – Generic – B2964

B2964 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 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 5,767

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

What does this mean?

What are the Possible Causes of the DTC B2964?

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?

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 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 B2964 code?

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

Need Help with the Code?

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

Information for Specific Makes

B2964 Buick — Key In Ignition Circuit High
B2964 Cadillac — Key In Ignition Circuit High
B2964 Chevrolet — Key In Ignition Circuit High
B2964 Ford — Passenger Seat Heater Feedback Circuit Failure
B2964 GMC — Key In Ignition Circuit High
B2964 Lincoln — Passenger Seat Heater Feedback Circuit Failure
B2964 Mercury — Passenger Seat Heater Feedback Circuit Failure

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 Code

What does OBDII code B2964 indicate?

OBDII code B2964 indicates a "Key In Ignition Circuit High" issue, suggesting that the vehicle's system has detected a high voltage condition in the ignition switch circuit when the key is in the ignition.

What are the common symptoms associated with B2964?

Common symptoms include warning lights on the dashboard, issues with starting the vehicle, problems with the ignition switch, and potential malfunctions in the vehicle's electrical systems.

What could cause the B2964 code to trigger?

Causes may include a faulty ignition switch, damaged wiring or connectors in the ignition circuit, a malfunctioning body control module (BCM), or a short circuit that leads to high voltage readings.

How can I diagnose the issue related to code B2964?

To diagnose B2964, check the ignition switch for proper operation, inspect the wiring and connectors for damage, use a multimeter to test voltage levels in the circuit, and scan the vehicle for any other related trouble codes.

What repairs might be needed to fix the B2964 code?

Repairs may involve replacing a faulty ignition switch, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the body control module if it is determined to be the source of the problem.

Is it safe to drive a vehicle with the B2964 code?

While it may be drivable, it is advisable to address the B2964 code promptly to avoid potential electrical issues or starting problems that could leave you stranded.

Can I clear the B2964 code and hope it doesn't return?

Clearing the code may temporarily turn off the warning light, but if the underlying problem is not fixed, the code will likely return, indicating that further investigation and repair are needed.

How much does it typically cost to repair issues associated with B2964?

Repair costs can vary widely based on the specific issue, but replacing an ignition switch can range from $100 to $300, while more extensive electrical repairs could be higher.

Are there any DIY steps I can take to troubleshoot B2964?

Yes, you can start by visually inspecting the ignition switch and wiring for damage, testing the ignition switch functionality, and checking for any blown fuses related to the ignition system before seeking professional help.