AutoCodes – GMC – P217B 2018 GMC Sierra

P217B 2018 GMC Sierra Code - Cylinder 7 Injector High Control Circuit Low 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 7, Fuel Injector 7 harness is open or shorted, Fuel Injector 7 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: P217B 2018 GMC Sierra indicates Cylinder 7 Injector High Control Circuit Low Voltage.
Common causes: Common causes include Faulty Fuel Injector 7, Fuel Injector 7 harness is open or shorted, Fuel Injector 7 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 151

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 08, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P217B 2018 GMC Sierra 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 ground for greater than 2 s.

OBDII Code P217B 2018 GMC Sierra - Cylinder 7 Injector High Control Circuit Low Voltage - AutoCodes.com — P217B 2018 GMC Sierra Code - Cylinder 7 Injector High Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P217B 2018 GMC Sierra?

Faulty Fuel Injector 7
Fuel Injector 7 harness is open or shorted
Fuel Injector 7 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P217B 2018 GMC Sierra?

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 P217B 2018 GMC Sierra 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 P217B 2018 GMC Sierra code?

Need more information on how to fix the P217B 2018 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P217B 2018 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 P217B 2018 GMC Sierra Code

1. What are the common symptoms of OBDII code P217B in a 2018 GMC Sierra?

- Common symptoms include rough idling, decreased engine performance, and potential misfires in cylinder 7.

2. What does the OBDII code P217B "Cylinder 7 Injector High Control Circuit Low Voltage" mean?

- This code indicates that there is a low voltage condition detected in the high control circuit for the fuel injector in cylinder 7.

3. What are the potential causes of OBDII code P217B in a 2018 GMC Sierra?

- Possible causes include a faulty fuel injector in cylinder 7, wiring issues in the injector circuit, or a problem with the Engine Control Module (ECM).

4. How can I diagnose the OBDII code P217B in my 2018 GMC Sierra?

- Diagnosis typically involves inspecting the wiring and connectors related to the fuel injector in cylinder 7, testing the injector itself, and checking the ECM for any faults.

5. What are the repair options for fixing OBDII code P217B in a 2018 GMC Sierra?

- Repair options may include replacing the fuel injector in cylinder 7, repairing any damaged wiring or connectors, or reprogramming the ECM if necessary.

6. Can driving with OBDII code P217B in a 2018 GMC Sierra cause further damage?

- Continuing to drive with this code may lead to poor engine performance, potential damage to the catalytic converter, and increased fuel consumption.

7. How much does it typically cost to repair OBDII code P217B in a 2018 GMC Sierra?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from a few hundred to a thousand dollars, including parts and labor.

8. Is it safe to ignore OBDII code P217B in a 2018 GMC Sierra?

- Ignoring this code can lead to engine performance issues and potential damage over time, so it is recommended to address the problem promptly.

9. Can a DIY enthusiast fix OBDII code P217B in a 2018 GMC Sierra?

- While some basic troubleshooting steps can be performed by DIY enthusiasts, diagnosing and repairing this code may require professional expertise and specialized tools.

10. How often does OBDII code P217B occur in a 2018 GMC Sierra?

- The occurrence of this specific code can vary, but it is relatively uncommon compared to more generic codes related to engine performance issues.