AutoCodes – GMC – P0283 GMC

P0283 GMC Code - Cylinder 8 Injector 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 Dirty Fuel Injector 8, Faulty Fuel Injector 8, Plugged Fuel Injector 8. 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: P0283 GMC indicates Cylinder 8 Injector Control Circuit High Voltage.
Common causes: Common causes include Dirty Fuel Injector 8, Faulty Fuel Injector 8, Plugged Fuel Injector 8.
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 394

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
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0283 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 shorted to voltage for greater than 2 s.

OBDII Code P0283 GMC - Cylinder 8 Injector Control Circuit High Voltage - AutoCodes.com — P0283 GMC Code - Cylinder 8 Injector Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0283 GMC?

Dirty Fuel Injector 8
Faulty Fuel Injector 8
Plugged 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 P0283 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 does this mean?

Code Tech Notes

A clogged or partially clogged fuel injector can cause this code. Start by performing an injector flush before replacing the injector.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0283 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 P0283 GMC code?

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Need Help with the Code?

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Information for Specific GMC Models

P0283 2014 GMC Sierra — Cylinder 8 Injector Control Circuit High Voltage
P0283 2015 GMC Sierra — Cylinder 8 Injector Control Circuit High Voltage
P0283 2016 GMC Sierra — Cylinder 8 Injector Control Circuit High Voltage
P0283 2017 GMC Sierra — Cylinder 8 Injector Control Circuit High Voltage
P0283 2018 GMC Sierra — Cylinder 8 Injector Control Circuit High 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 P0283 GMC Code

1. What does OBDII code P0283 mean on a GMC?

P0283 indicates a "Cylinder 8 Injector Control Circuit High Voltage," meaning the engine control module (ECM) has detected an abnormally high voltage in the injector circuit for cylinder 8.

2. What are the common symptoms of code P0283?

Symptoms may include poor engine performance, rough idling, misfires, reduced fuel efficiency, and the check engine light being illuminated.

3. What causes code P0283 on a GMC?

Common causes include a damaged injector, faulty or corroded wiring, a bad connection in the injector circuit, or a defective engine control module (ECM).

4. Can I drive my GMC with code P0283 active?

Driving with P0283 is not recommended, as it can cause engine performance issues and may lead to further damage if the injector or wiring problem is not addressed.

5. How do I diagnose code P0283 on a GMC?

Diagnosis typically involves inspecting the injector and wiring for cylinder 8, checking for loose or corroded connectors, and testing the voltage and resistance of the injector circuit.

6. How can I fix code P0283 on my GMC?

Repairs may include replacing the injector for cylinder 8, repairing or replacing damaged wiring, cleaning or securing connectors, or, in rare cases, replacing the ECM.

7. Can a bad fuel injector trigger code P0283?

Yes, a malfunctioning or shorted injector in cylinder 8 can cause the ECM to detect high voltage and trigger this code.

8. What tools are needed to diagnose P0283?

Youâ€™ll need a diagnostic scan tool, a multimeter, and possibly wiring diagrams for your GMC model to properly diagnose the issue.

9. Is code P0283 specific to GMC vehicles?

No, P0283 is a generic OBDII code that can appear on any vehicle, but the specific symptoms and repair steps may vary by make and model.

10. How much does it cost to repair code P0283 on a GMC?

Repair costs can vary depending on the cause but typically range from $100 to $400 for parts and labor, with injector replacement being on the higher end.