AutoCodes – GMC – P0202 2016 GMC Sierra

P0202 2016 GMC Sierra Code - Cylinder 2 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 2, Fuel Injector 2 harness is open or shorted, Fuel Injector 2 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: P0202 2016 GMC Sierra indicates Cylinder 2 Injector Control Circuit.
Common causes: Common causes include Faulty Fuel Injector 2, Fuel Injector 2 harness is open or shorted, Fuel Injector 2 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 265

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 P0202 2016 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 control circuit is open for greater than 2 s.

OBDII Code P0202 2016 GMC Sierra - Cylinder 2 Injector Control Circuit - AutoCodes.com — P0202 2016 GMC Sierra Code - Cylinder 2 Injector Control Circuit

What does this mean?

What are the Possible Causes of the DTC P0202 2016 GMC Sierra?

Faulty Fuel Injector 2
Fuel Injector 2 harness is open or shorted
Fuel Injector 2 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0202 2016 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 P0202 2016 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 P0202 2016 GMC Sierra code?

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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 P0202 2016 GMC Sierra Code

What does the OBDII code P0202 mean on a 2016 GMC Sierra?

P0202 indicates an issue with the Cylinder 2 Injector Control Circuit, meaning the fuel injector for cylinder 2 is not functioning correctly due to an electrical problem.

What are the common symptoms of code P0202 in a 2016 GMC Sierra?

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

What causes OBDII code P0202 to appear?

Common causes include a faulty fuel injector, damaged wiring or connectors, issues with the injector driver circuit in the PCM, or corrosion in the electrical components.

Can I drive my 2016 GMC Sierra with code P0202 active?

Driving with P0202 is not recommended as it can cause engine misfires, reduced performance, and potential damage to other components over time.

How can I diagnose code P0202 on a 2016 GMC Sierra?

Start by inspecting the wiring and connectors related to cylinder 2's fuel injector, followed by testing the injector itself and checking the PCM for faults.

Is replacing the fuel injector the only solution for code P0202?

No, the issue may also be caused by wiring, connectors, or PCM problems, so thorough diagnosis is necessary before replacing the fuel injector.

How much does it cost to fix code P0202 on a 2016 GMC Sierra?

Repair costs vary depending on the cause, ranging from $50-$150 for wiring repairs to $200-$400 for a fuel injector replacement.

Can a dirty fuel injector cause P0202?

While dirty injectors typically cause performance issues, P0202 specifically relates to an electrical control circuit fault, not dirt or clogging.

What tools are needed to fix code P0202?

You may need a multimeter, OBDII scanner, wiring diagrams, and basic hand tools for inspecting and repairing wiring or replacing the injector.

Could a bad PCM cause code P0202?

Yes, if the injector driver circuit within the PCM is malfunctioning, it can lead to P0202. Testing the PCM may be necessary if other fixes don't resolve the code.