AutoCodes – GMC – P0208 GMC

P0208 GMC Code - Cylinder 8 Injector Control Circuit

Quick Answer

The Engine Control Module (ECM) supplies voltage to each fuel injector on the high control circuits. Common causes include Faulty Fuel Injector 8, Fuel Injector 8 harness is open or shorted, Fuel Injector 8 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: P0208 GMC indicates Cylinder 8 Injector Control Circuit.
Common causes: Common causes include Faulty Fuel Injector 8, Fuel Injector 8 harness is open or shorted, Fuel Injector 8 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 5,452

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 P0208 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 control circuit is open for greater than 2 s.

OBDII Code P0208 GMC - Cylinder 8 Injector Control Circuit - AutoCodes.com — P0208 GMC Code - Cylinder 8 Injector Control Circuit

What does this mean?

What are the Possible Causes of the DTC P0208 GMC?

Faulty Fuel Injector 8
Fuel Injector 8 harness is open or shorted
Fuel Injector 8 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0208 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 P0208 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.

Need more information about the P0208 GMC code?

Need more information on how to fix the P0208 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0208 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

P0208 2014 GMC Sierra — Cylinder 8 Injector Control Circuit
P0208 2015 GMC Sierra — Cylinder 8 Injector Control Circuit
P0208 2016 GMC Sierra — Cylinder 8 Injector Control Circuit
P0208 2017 GMC Sierra — Cylinder 8 Injector Control Circuit
P0208 2018 GMC Sierra — Cylinder 8 Injector Control Circuit

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 P0208 GMC Code

1. What are the common symptoms of OBDII code P0208 GMC (Cylinder 8 Injector Control Circuit)?

The common symptoms include engine misfires, rough idling, decreased fuel efficiency, and a noticeable decrease in engine performance.

2. What are the possible causes of OBDII code P0208 GMC?

Possible causes include a faulty fuel injector in cylinder 8, wiring issues in the injector circuit, a bad injector driver in the engine control module, or a poor electrical connection.

3. How can I diagnose the cause of OBDII code P0208 GMC?

Diagnosis involves inspecting the wiring and connections related to the injector in cylinder 8, checking the injector itself for proper operation, and using a scan tool to monitor injector control signals.

4. Can I continue to drive my vehicle with OBDII code P0208 GMC triggered?

It is not recommended to drive the vehicle with this code triggered, as it can lead to further engine damage and potential safety hazards. It's best to address the issue promptly.

5. How can I repair OBDII code P0208 GMC?

Repairing the code involves fixing the root cause, which may include replacing the faulty fuel injector, repairing any damaged wiring or connections, or replacing the injector driver in the engine control module.

6. Is it possible to clear OBDII code P0208 GMC without fixing the underlying issue?

While it is possible to clear the code temporarily, it will likely return until the root cause is addressed. It's important to fix the underlying issue to prevent further problems.

7. Are there any preventive maintenance tips to avoid OBDII code P0208 GMC?

Regularly servicing the fuel injection system, using high-quality fuel, and keeping up with vehicle maintenance schedules can help prevent issues that may trigger this code.

8. How much does it typically cost to repair OBDII code P0208 GMC?

The cost of repair can vary depending on the root cause of the issue, but it may involve parts and labor expenses ranging from $100 to $500 or more, depending on the extent of the repairs needed.

9. Can a DIY enthusiast fix OBDII code P0208 GMC at home?

While some may have the skills to diagnose and repair this code at home, it's recommended to seek professional help, especially when dealing with electrical components and engine systems.

10. Will OBDII code P0208 GMC cause my vehicle to fail an emissions test?

Yes, this code can cause your vehicle to fail an emissions test, as it indicates a problem with the fuel injector control circuit, which can affect the engine's emissions output.