AutoCodes – GMC – P216B GMC

P216B GMC Code - Cylinder 5 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 5, Fuel Injector 5 harness is open or shorted, Fuel Injector 5 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: P216B GMC indicates Cylinder 5 Injector High Control Circuit Low Voltage.
Common causes: Common causes include Faulty Fuel Injector 5, Fuel Injector 5 harness is open or shorted, Fuel Injector 5 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 1,658

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 P216B GMC 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 P216B GMC - Cylinder 5 Injector High Control Circuit Low Voltage - AutoCodes.com — P216B GMC Code - Cylinder 5 Injector High Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P216B GMC?

Faulty Fuel Injector 5
Fuel Injector 5 harness is open or shorted
Fuel Injector 5 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P216B GMC?

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 P216B GMC 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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Information for Specific GMC Models

P216B 2014 GMC Sierra — Cylinder 5 Injector High Control Circuit Low Voltage
P216B 2015 GMC Sierra — Cylinder 5 Injector High Control Circuit Low Voltage
P216B 2016 GMC Sierra — Cylinder 5 Injector High Control Circuit Low Voltage
P216B 2017 GMC Sierra — Cylinder 5 Injector High Control Circuit Low Voltage
P216B 2018 GMC Sierra — Cylinder 5 Injector High Control Circuit Low Voltage

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 P216B GMC Code

1. What are the common symptoms of OBDII code P216B GMC (Cylinder 5 Injector High Control Circuit Low Voltage)?

- Common symptoms include rough idling, misfires, decreased engine performance, and potential stalling.

2. What are the possible causes of OBDII code P216B GMC?

- The code can be triggered by issues such as a faulty injector, wiring problems, a bad injector control module, or a poor electrical connection.

3. How can I diagnose the cause of OBDII code P216B GMC?

- Diagnosis typically involves using a scan tool to check for the code, conducting a visual inspection of the injector and related components, and testing the injector's electrical connections.

4. What are some repair tips for addressing OBDII code P216B GMC?

- Repair tips may include checking and cleaning injector connections, testing the injector's resistance, inspecting the injector wiring harness for damage, and possibly replacing the faulty injector.

5. Can driving with OBDII code P216B GMC cause further damage to the vehicle?

- Continuing to drive with this code can potentially lead to increased fuel consumption, engine damage, and emission issues, so it is recommended to address the problem promptly.

6. How much does it typically cost to repair OBDII code P216B GMC?

- The cost of repairs can vary depending on the exact cause of the issue, but it may involve expenses for parts such as injectors, wiring harnesses, or control modules, as well as labor costs.

7. Is it safe to continue driving my vehicle with OBDII code P216B GMC?

- While the vehicle may still operate with this code present, it is not advisable to ignore it, as it can lead to potential engine performance issues and further damage if left unresolved.

8. Can I reset the OBDII code P216B GMC on my own?

- You can clear the code using an OBDII scanner, but it is essential to diagnose and address the underlying issue causing the code to prevent it from reoccurring.

9. How long does it typically take to repair OBDII code P216B GMC?

- The repair time can vary based on the specific cause of the code and the complexity of the repair process, but it may range from a few hours to a full day in some cases.

10. Are there any preventative measures to avoid OBDII code P216B GMC in the future?

- Regularly maintaining your vehicle, keeping up with scheduled inspections, and promptly addressing any engine performance issues can help prevent the recurrence of this code.