Engine-CodesChevrolet – B2964 Chevrolet

B2964 Chevrolet Code - Key In Ignition Circuit High

Quick Answer

The B2964 Chevrolet diagnostic trouble code (DTC) indicates that there is a high voltage condition detected in the key-in-ignition circuit. Common causes include Faulty ignition switch, Short circuit in the key-in-ignition circuit, Wiring issues, such as loose connections or damaged wires. 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, Short circuit in the key-in-ignition circuit, Wiring issues, such as loose connections or damaged wires.
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.
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code B2964 Chevrolet Description

The B2964 Chevrolet diagnostic trouble code (DTC) indicates that there is a high voltage condition detected in the key-in-ignition circuit. This means that the vehicle's computer has detected an abnormal voltage level in the circuit responsible for detecting whether the key is in the ignition switch. This issue can potentially lead to problems with the vehicle's starting system, as the computer may not recognize the key position correctly. If left unaddressed, it could result in the vehicle not starting or difficulty in starting the engine.

OBDII Code B2964 Chevrolet - Key In Ignition Circuit High
B2964 Chevrolet Code - Key In Ignition Circuit High

Common Causes of B2964 Chevrolet

  1. Faulty ignition switch
  2. Short circuit in the key-in-ignition circuit
  3. Wiring issues, such as loose connections or damaged wires
  4. Faulty key fob or key transponder
  5. Issues with the immobilizer system

Symptoms of B2964 Chevrolet

  1. Engine starting issues
  2. Key not being recognized by the ignition system
  3. Warning lights on the dashboard related to the key or ignition
  4. Intermittent stalling of the engine
  5. Inability to turn the key in the ignition switch

How to Fix B2964 Chevrolet

  1. Begin by performing a thorough inspection of the key-in-ignition circuit, checking for any visible signs of damage or loose connections.
  2. Test the ignition switch to ensure it is functioning properly. Replace if necessary.
  3. Check the wiring harness for any shorts or breaks. Repair or replace damaged wires as needed.
  4. Test the key fob or transponder to ensure it is transmitting the correct signal. Replace if necessary.
  5. If the issue persists, consider checking the immobilizer system for any faults and address them accordingly.

Cost to Fix B2964 Chevrolet

The cost of repairing a B2964 Chevrolet DTC can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay anywhere from $100 to $300 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops may vary, so it's advisable to get a quote from a trusted mechanic before proceeding with the repair.

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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 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.

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