P0280 Code - Cylinder 7 Injector Circuit High

What Does P0280 Mean?

OBD-II Code Decreased engine performance is defined as a Cylinder 7 Injector Circuit High

The engine control module (PCM) has special transistors called "drivers" to turn the Fuel Injectors on and off in the Fuel Injection System. If the PCM cannot control the fuel injector, it will set code P0280.

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What are the common causes of P0280 ?

• Defective ECU strategies or components will prevent proper regeneration
• The Mass Airflow sensor is a hot wire that senses the volume of air entering the intake manifold. The computer uses this information to control fuel mixture.
• A large air leak at or near the number one oxygen sensor would also cause a lean mixture.

How do you troubleshoot P0280 ?

Fixing a fuel injector circuit malfunction may include:

• Cleaning the injector with a direct injection cleaner kit
• Repairing damaged or loose wiring or connectors
• Replacing the cylinder 7 fuel injector
• Replacing the ECM (rarely required)

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