AutoCodes – GMC – P0205 GMC

P0205 GMC Code - Cylinder 5 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 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: P0205 GMC indicates Cylinder 5 Injector Control Circuit.
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 5,794

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 P0205 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 P0205 GMC - Cylinder 5 Injector Control Circuit - AutoCodes.com — P0205 GMC Code - Cylinder 5 Injector Control Circuit

What does this mean?

What are the Possible Causes of the DTC P0205 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 P0205 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 P0205 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 P0205 GMC code?

Need more information on how to fix the P0205 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0205 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

P0205 2014 GMC Sierra — Cylinder 5 Injector Control Circuit
P0205 2015 GMC Sierra — Cylinder 5 Injector Control Circuit
P0205 2016 GMC Sierra — Cylinder 5 Injector Control Circuit
P0205 2017 GMC Sierra — Cylinder 5 Injector Control Circuit
P0205 2018 GMC Sierra — Cylinder 5 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 P0205 GMC Code

What does the OBDII code P0205 mean on a GMC vehicle?

P0205 indicates a problem with the cylinder 5 fuel injector control circuit, meaning the engine control module (ECM) is unable to properly manage the injector's operation.

What are the symptoms of code P0205 on a GMC?

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

What causes code P0205 on a GMC?

Common causes include a faulty fuel injector, damaged wiring or connectors in the injector circuit, a malfunctioning ECM, or a weak electrical connection.

Can I drive my GMC with P0205 active?

Driving with P0205 is not recommended as it can lead to engine damage, poor performance, and higher fuel consumption. Address the issue promptly.

How do I diagnose code P0205 on a GMC?

Start by inspecting the wiring and connectors for damage or corrosion. Then test the fuel injector and use a multimeter to check for proper voltage and continuity in the circuit.

What repairs are needed to fix P0205 on a GMC?

Repairs may include replacing the faulty injector, repairing damaged wiring, cleaning corroded connectors, or updating/replacing the ECM if necessary.

How much does it cost to fix code P0205 on a GMC?

Repair costs vary but typically range from $150 to $400, depending on whether you need to replace the injector, repair wiring, or address other issues.

Can a dirty fuel injector cause code P0205?

Yes, a clogged or dirty injector may disrupt its operation, causing the ECM to register the P0205 code. Cleaning or replacing the injector may resolve the issue.

How can I prevent code P0205 on my GMC?

Regular maintenance, such as inspecting wiring and connectors, using high-quality fuel, and cleaning injectors periodically, can help prevent this code.

Will a faulty ECM trigger code P0205 on a GMC?

Yes, a malfunctioning ECM can fail to properly control the injector, leading to the P0205 code. Testing the ECM may be necessary if other components check out.