Engine-CodesGMC – P0262 2016 GMC Sierra

P0262 2016 GMC Sierra Code - Cylinder 1 Injector Control Circuit High Voltage

Quick Answer

The P0262 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates an issue with the Cylinder 1 Injector Control Circuit High Voltage. Common causes include Faulty fuel injector, Wiring issue in the injector control circuit, Poor connection in the circuit. 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
P0262 2016 GMC Sierra indicates Cylinder 1 Injector Control Circuit High Voltage.
Common causes
Common causes include Faulty fuel injector, Wiring issue in the injector control circuit, Poor connection in the circuit.
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.
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code P0262 2016 GMC Sierra Description

The P0262 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates an issue with the Cylinder 1 Injector Control Circuit High Voltage. This means that the Engine Control Module (ECM) has detected a higher than normal voltage in the control circuit for the fuel injector in cylinder 1. The fuel injector is responsible for delivering the precise amount of fuel into the combustion chamber at the right time for optimal engine performance. When the voltage in the control circuit is too high, it can lead to various issues that affect the vehicle's performance.

OBDII Code P0262 2016 GMC Sierra - Cylinder 1 Injector Control Circuit High Voltage
P0262 2016 GMC Sierra Code - Cylinder 1 Injector Control Circuit High Voltage

Common Causes of P0262 2016 GMC Sierra

  1. Faulty fuel injector
  2. Wiring issue in the injector control circuit
  3. Poor connection in the circuit
  4. Damaged ECM
  5. Power supply issue to the injector

Symptoms of P0262 2016 GMC Sierra

  1. Rough idling
  2. Engine misfires
  3. Reduced fuel efficiency
  4. Engine stalling
  5. Check Engine Light illuminated

How to Fix P0262 2016 GMC Sierra

  1. Begin by conducting a thorough inspection of the injector control circuit, looking for any visible damage or loose connections.
  2. Test the fuel injector for proper operation and resistance to determine if it is faulty.
  3. Check the wiring harness for any signs of damage or corrosion and repair or replace as needed.
  4. Test the ECM to ensure it is functioning correctly and reprogram if necessary.
  5. Clear the DTC and perform a test drive to confirm that the issue has been resolved.

Cost to Fix P0262 2016 GMC Sierra

The typical repair costs for addressing a P0262 code on a 2016 GMC Sierra can range from $150 to $500, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate. Keep in mind that rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more competitive pricing.

Tech Notes for P0262 2016 GMC Sierra

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

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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.

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