AutoCodes – Generic – B2710

B2710 Code - Open Key Pellet

Quick Answer

When the ignition key is inserted in the ignition, the resistance of the key pellet is measured. Common causes include Faulty Ignition Key, Faulty Steering Column Lock Cylinder, Faulty Instrument Panel Cluster (IPC). 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: B2710 indicates Open Key Pellet.
Common causes: Common causes include Faulty Ignition Key, Faulty Steering Column Lock Cylinder, Faulty Instrument Panel Cluster (IPC).
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 1,009

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 Jan 26, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2710 Description

When the ignition key is inserted in the ignition, the resistance of the key pellet is measured. Resistance is compared with resistance value stored in the Instrument Panel Cluster (IPC) memory. DTC B2710 will set when an open or zero resistance value is measured from key pellet prior to obtaining a valid resistance reading. DTC B2711 will set when an open or zero resistance value is measured from key pellet following a valid resistance reading. When DTC B2710 is set as current, IPC will display STARTING DISABLED, REMOVE IGNITION KEY message on drivers message center and prevent the vehicle from starting. When DTC B2711 is set as current, IPC will display THEFT SYSTEM PROBLEM, CAR MAY NOT RESTART message on drivers message center and allow the vehicle to continue to run.

OBDII Code B2710 - Open Key Pellet - AutoCodes.com — B2710 Code - Open Key Pellet

What does this mean?

What are the Possible Causes of the DTC B2710?

Faulty Ignition Key
Faulty Steering Column Lock Cylinder
Faulty Instrument Panel Cluster (IPC)

How to Fix the DTC B2710?

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 B2710 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 B2710 code?

Need more information on how to fix the B2710 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2710 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2710 Buick — Open Key Pellet
B2710 Cadillac — Open Key Pellet
B2710 Chevrolet — Open Key Pellet
B2710 GMC — Open Key Pellet

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 B2710 Code

1. What does the OBDII code B2710 mean?

Code B2710 indicates an issue with the "Open Key Pellet" circuit, which is part of the vehicle's anti-theft system. It typically signals an open or faulty connection in the key's resistor pellet or the related wiring.

2. What are the common symptoms of code B2710?

Symptoms may include the engine not starting, the security light staying on or flashing, and intermittent starting issues.

3. What causes the code B2710 to appear?

The most common causes are a damaged resistor pellet in the ignition key, worn ignition lock cylinder contacts, or a break in the wiring between the ignition cylinder and the anti-theft module.

4. How can I diagnose the B2710 code?

Start by inspecting the key's resistor pellet for damage, check the ignition cylinder contacts for wear or debris, and test the resistance of the pellet and the wiring for continuity.

5. Can a worn-out ignition key cause code B2710?

Yes, a worn or damaged ignition key with a faulty resistor pellet can trigger this code, as the anti-theft system cannot read the correct resistance value.

6. How do you fix the B2710 code?

Possible fixes include replacing the ignition key, repairing or replacing the ignition lock cylinder, or fixing any broken or corroded wiring in the key pellet circuit.

7. Is it necessary to reprogram the vehicle after fixing code B2710?

In most cases, reprogramming is not required unless the anti-theft module or ignition lock cylinder is replaced. Consult your vehicle's service manual for specific procedures.

8. Can I bypass the key pellet to fix code B2710?

While bypassing the key pellet is possible by using a resistor of the correct value, this is not recommended as it compromises the vehicle's security system.

9. How much does it cost to repair code B2710?

The repair cost can vary depending on the issue. Replacing a key may cost $50-$150, while replacing the ignition lock cylinder or repairing wiring can range from $200-$500.

10. Can a dead battery cause the B2710 code?

No, a dead battery is unlikely to cause this code. B2710 is specifically related to the key pellet circuit and anti-theft system, not the vehicle's power supply.