P0274 2017 GMC Sierra Code - Cylinder 5 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 5, Faulty Fuel Injector 5, Plugged Fuel Injector 5. 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
- P0274 2017 GMC Sierra indicates Cylinder 5 Injector Control Circuit High Voltage.
- Common causes
- Common causes include Dirty Fuel Injector 5, Faulty Fuel Injector 5, Plugged Fuel Injector 5.
- 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.
Code P0274 2017 GMC Sierra Description
What are the Possible Causes of the DTC P0274 2017 GMC Sierra?
- Dirty Fuel Injector 5
- Faulty Fuel Injector 5
- Plugged 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 P0274 2017 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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0274 2017 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.
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Frequently Asked Questions about P0274 2017 GMC Sierra Code
What does the OBDII code P0274 mean for a 2017 GMC Sierra?
Code P0274 indicates a high voltage issue in the control circuit for the cylinder 5 fuel injector.
What are the common symptoms of code P0274 in a 2017 GMC Sierra?
Symptoms include rough idling, poor engine performance, reduced fuel efficiency, and possible engine misfires.
What causes the P0274 code to appear?
Potential causes include a faulty cylinder 5 fuel injector, damaged wiring or connectors, a malfunctioning PCM, or an electrical short in the injector circuit.
Can I drive my 2017 GMC Sierra with code P0274?
It’s not recommended, as driving with this code can lead to engine damage, reduced performance, and safety concerns.
How do I diagnose code P0274 on my GMC Sierra?
Check the wiring and connectors for cylinder 5’s injector, test the injector itself, and use a multimeter to verify proper voltage readings.
What tools are needed to fix code P0274?
You’ll need an OBDII scanner, a multimeter, and basic hand tools to inspect the injector and its wiring.
How much does it cost to repair a P0274 code?
Costs vary, but replacing a fuel injector typically ranges from $150 to $400, while fixing wiring issues may cost less.
Can a dirty fuel injector cause code P0274?
Yes, a clogged or dirty injector can affect electrical performance and trigger this code.
Does the PCM need to be replaced to fix code P0274?
Not necessarily; only replace the PCM if all other potential causes of the issue have been ruled out.
How can I prevent the P0274 code from appearing?
Regular maintenance, including cleaning fuel injectors and inspecting wiring, can help prevent this code.
Discuss the causes and fixes for P0274 2017 GMC Sierra OBDII Code
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