AutoCodes – Generic – B2711

B2711 Code - Short 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: B2711 indicates Short 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 1,605

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 B2711 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 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 B2711 - Short Key Pellet - AutoCodes.com — B2711 Code - Short Key Pellet

What does this mean?

What are the Possible Causes of the DTC B2711?

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

How to Fix the DTC B2711?

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 B2711 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 B2711 code?

Need more information on how to fix the B2711 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2711 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2711 Buick — Short Key Pellet
B2711 Cadillac — Short Key Pellet
B2711 Chevrolet — Short Key Pellet
B2711 GMC — Short 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 B2711 Code

1. What does the OBDII code B2711 mean?

B2711 indicates an issue with the short key pellet circuit, typically found in vehicles with a key-based immobilizer system that uses resistor pellets for security.

2. What are the common symptoms of a B2711 code?

Symptoms may include the engine not starting, the security or anti-theft light staying illuminated, or intermittent starting issues.

3. What causes the B2711 code to trigger?

The code is usually caused by a faulty ignition key resistor pellet, damaged wiring in the key circuit, a malfunctioning ignition lock cylinder, or issues with the vehicle's theft deterrent module.

4. How can I diagnose a B2711 code?

Start by inspecting the key's resistor pellet for damage or wear, check the wiring in the ignition lock cylinder, and use a multimeter to measure the resistance of the key pellet and compare it to the vehicle's specifications.

5. Can a worn-out key cause the B2711 code?

Yes, a worn or damaged key with a faulty resistor pellet can cause this code, as the key's resistance value may not match what the system expects.

6. Is it safe to drive with a B2711 code?

Typically, the vehicle may not start with this code present, so itâ€™s not a matter of safety but functionality. The car might not be drivable until the issue is resolved.

7. How is a B2711 code fixed?

Repairs may include replacing the ignition key, repairing or replacing the lock cylinder wiring, or reprogramming the theft deterrent module if necessary.

8. Can I bypass the key pellet to fix the B2711 code?

Bypassing the resistor pellet is not recommended, as it compromises the vehicle's anti-theft system and may void warranties or violate laws in some regions.

9. How much does it cost to repair a B2711 code?

Repair costs can vary but generally range from $100 to $300 depending on whether you need a new key, ignition cylinder, or wiring repairs.

10. Do I need to reprogram my vehicle after fixing the B2711 code?

In some cases, reprogramming the theft deterrent module or resetting the system may be required after repairs to clear the code and ensure proper operation.