P0274 2016 GMC Sierra Code - Cylinder 5 Injector Control Circuit High Voltage
Quick Answer
The diagnostic trouble code P0274 for a 2016 GMC Sierra indicates an issue with the Cylinder 5 Injector Control Circuit High Voltage. Common causes include Faulty fuel injector in cylinder 5, Wiring issue in the injector control circuit, ECM malfunction. 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 2016 GMC Sierra indicates Cylinder 5 Injector Control Circuit High Voltage.
- Common causes
- Common causes include Faulty fuel injector in cylinder 5, Wiring issue in the injector control circuit, ECM malfunction.
- 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 P0274 2016 GMC Sierra Description
The diagnostic trouble code P0274 for a 2016 GMC Sierra indicates an issue with the Cylinder 5 Injector Control Circuit High Voltage. This means that the Engine Control Module (ECM) has detected that the voltage in the control circuit for the fuel injector in cylinder 5 is higher than the specified range. The fuel injector is responsible for delivering the precise amount of fuel into the combustion chamber for efficient combustion. When the voltage in the control circuit is too high, it can lead to improper fuel delivery, affecting the engine's performance.
Common Causes of P0274 2016 GMC Sierra
- Faulty fuel injector in cylinder 5
- Wiring issue in the injector control circuit
- ECM malfunction
- Poor connection in the control circuit
- Corrosion or damage to electrical connectors
Symptoms of P0274 2016 GMC Sierra
- Rough idling or engine misfires
- Decreased fuel efficiency
- Engine hesitation or stalling
- Check Engine Light illuminated
- Strong fuel odor from the exhaust
How to Fix P0274 2016 GMC Sierra
- Begin by conducting a thorough inspection of the injector control circuit for cylinder 5, checking for any visible damage or corrosion.
- Test the fuel injector in cylinder 5 to determine if it is functioning correctly. Replace the injector if necessary.
- Check the wiring harness and connectors for any signs of damage or poor connections. Repair or replace as needed.
- Clear the diagnostic trouble codes from the ECM and test drive the vehicle to ensure the issue has been resolved.
- If the problem persists, further diagnostic testing may be required to pinpoint the exact cause of the high voltage in the injector control circuit.
Cost to Fix P0274 2016 GMC Sierra
The typical repair costs for addressing a Cylinder 5 Injector Control Circuit High Voltage issue can range from $200 to $500, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour for labor, with rates potentially higher in metropolitan areas or at dealerships, and lower at independent shops. It's recommended to inquire about local rates for a more accurate estimate.
Tech Notes for P0274 2016 GMC Sierra
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