AutoCodes – Buick – P216F Buick

P216F Buick Code - Cylinder 6 Injector High Control Circuit High Voltage

Quick Answer

The Engine Control Module (ECM) supplies voltage to each fuel injector on the high control circuits. Common causes include Faulty Fuel Injector 6, Fuel Injector 6 harness is open or shorted, Fuel Injector 6 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: P216F Buick indicates Cylinder 6 Injector High Control Circuit High Voltage.
Common causes: Common causes include Faulty Fuel Injector 6, Fuel Injector 6 harness is open or shorted, Fuel Injector 6 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 1,117

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 Mar 23, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P216F Buick Description

The Engine Control Module (ECM) supplies voltage to each fuel injector on the high control circuits. The ECM energizes each fuel injector by grounding the low control circuit of the fuel injector. The ECM monitors the status of the fuel injector circuits. When a fuel injector circuit condition is detected by the ECM, the affected fuel injector(s) is disabled. The Diagnostic Trouble Code (DTC) will be set when the ECM detects the fuel injector high voltage supply circuit is shorted to voltage for greater than 2 s.

OBDII Code P216F Buick - Cylinder 6 Injector High Control Circuit High Voltage - AutoCodes.com — P216F Buick Code - Cylinder 6 Injector High Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P216F Buick?

Faulty Fuel Injector 6
Fuel Injector 6 harness is open or shorted
Fuel Injector 6 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P216F 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 P216F 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 P216F Buick Code

1. What does the OBDII code P216F mean for a Buick?

P216F indicates that the Engine Control Module (ECM) has detected a high voltage condition in the control circuit for the injector on cylinder 6.

2. What are the common symptoms of code P216F in a Buick?

Symptoms may include rough idling, engine misfires, reduced fuel efficiency, hesitation during acceleration, and the check engine light being illuminated.

3. What causes the P216F code to appear?

Common causes include a faulty fuel injector, damaged wiring or connectors in the injector circuit, a malfunctioning ECM, or excessive resistance in the circuit.

4. Can I drive my Buick with a P216F code?

Driving with this code is not recommended, as it may lead to poor engine performance, potential engine damage, or unsafe driving conditions.

5. How do I diagnose the P216F code?

Diagnosis involves using a multimeter to check for proper voltage and continuity in the cylinder 6 injector circuit, inspecting wiring and connectors for damage, and testing the fuel injector itself.

6. How is the P216F code fixed on a Buick?

Repairs may include replacing the cylinder 6 fuel injector, repairing or replacing damaged wiring or connectors, or, in rare cases, reprogramming or replacing the ECM.

7. Can a bad fuel injector cause the P216F code?

Yes, a faulty or shorted fuel injector can lead to excessive voltage in the control circuit, triggering the P216F code.

8. How much does it cost to repair a P216F code?

Repair costs vary but may range from $150 to $500, depending on whether the issue is with the fuel injector, wiring, or ECM.

9. Can a dirty fuel injector cause the P216F code?

No, a dirty injector typically causes poor fuel flow, not high voltage. This code is more likely related to electrical issues in the injector circuit.

10. How can I prevent the P216F code from recurring?

Regular maintenance, including inspecting and cleaning fuel injectors and checking wiring for wear, can help prevent this code from returning.