AutoCodes – Buick – C1216 Buick

C1216 Buick Code - Electronic Brake Control Relay Coil Circuit Open

Quick Answer

The Electronic Brake Control Module (EBCM) monitors the On/Off state of each solenoid and recognizes when the ABS is in pressure decrease too long. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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: C1216 Buick indicates Electronic Brake Control Relay Coil Circuit Open.
Common causes: Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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 5,194

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 Aug 24, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1216 Buick Description

The Electronic Brake Control Module (EBCM) monitors the On/Off state of each solenoid and recognizes when the ABS is in pressure decrease too long. This fault indicates that the EBCM was unable to decrease brake pressure enough to a certain wheel to prevent excessive wheel slip.

OBDII Code C1216 Buick - Electronic Brake Control Relay Coil Circuit Open - AutoCodes.com — C1216 Buick Code - Electronic Brake Control Relay Coil Circuit Open

What does this mean?

What are the Possible Causes of the DTC C1216 Buick?

Faulty Electronic Brake Control Module (EBCM)
Electronic Brake Control Module (EBCM) harness is open or shorted
Electronic Brake Control Module (EBCM) circuit poor electrical connection

How to Fix the DTC C1216 Buick?

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 C1216 Buick 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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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 C1216 Buick Code

1. What does the OBDII code C1216 mean on a Buick?

C1216 indicates an issue with the Electronic Brake Control Relay Coil Circuit, specifically an open circuit that disrupts proper functioning of the brake control system.

2. What are the symptoms of code C1216 in a Buick?

Common symptoms include the ABS light being illuminated, reduced or no ABS functionality, and potentially longer stopping distances during emergency braking.

3. What causes the C1216 code to trigger?

The C1216 code is typically caused by a faulty relay, damaged wiring or connectors in the brake control circuit, or a malfunctioning ABS control module.

4. Is it safe to drive with the C1216 code present?

While the vehicle may still be drivable, the ABS system may not function correctly, increasing the risk of wheel lockup during hard braking. It is recommended to address the issue promptly.

5. How can I diagnose the C1216 code on my Buick?

Start by inspecting the brake control relay and its wiring for damage or corrosion. Use a multimeter to test the relay coil circuit for continuity and check the ABS module for faults.

6. Can a bad ABS control module cause the C1216 code?

Yes, a malfunctioning ABS control module can lead to an open relay coil circuit and trigger the C1216 code.

7. How do I fix the C1216 code on my Buick?

Repairs may include replacing the faulty brake control relay, repairing or replacing damaged wiring, cleaning corroded connectors, or replacing the ABS control module if necessary.

8. How much does it cost to repair the C1216 code on a Buick?

Repair costs vary based on the issue. Replacing a brake control relay may cost $50-$100, while ABS module replacement can range between $500-$1,500, including parts and labor.

9. Can a weak battery cause the C1216 code?

A weak or failing battery can cause electrical issues that may affect the relay circuit, potentially triggering the C1216 code. Always check the battery voltage as part of the diagnosis.

10. Will clearing the C1216 code with a scanner fix the problem?

Clearing the code without addressing the underlying issue will not fix the problem. The code will likely return until the open circuit or faulty component is repaired.