P2147 Fault Code

Fuel Injector Group A Supply Voltage Circuit Low

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2147 code refers to an issue with the Fuel Injector Group A Supply Voltage Circuit. This code indicates that the supply voltage to the fuel injectors in Group A is lower than the expected range, which can lead to improper fuel delivery and affect engine performance.

• Commonly presents with other codes related to fuel trim or injector performance.
• May be caused by wiring issues, poor connections, or a malfunctioning engine control module (ECM).

What are the symptoms of the P2147 code?

Drivers may experience a variety of symptoms when this code is triggered:

• Engine misfires or rough idling due to insufficient fuel being injected.
• Decreased engine performance and power output during acceleration.
• Poor fuel economy resulting from improper fuel delivery.
• Potential engine stalling or starting issues.

What causes the P2147 code?

Several factors can contribute to a low supply voltage in the fuel injector circuit:

• Damaged or worn wiring and connectors in the injector circuit.
• Poor ground connection, which can affect the operation of the injectors.
• Faulty fuel injectors that cause a short to ground.
• ECM failure or malfunction that prevents the proper voltage from being sent to the injectors.

How to fix P2147?

To resolve the P2147 fault code, the following steps are recommended:

• Inspect the wiring and connectors associated with Injector Group A for signs of damage or corrosion.
• Use a multimeter to check for proper voltage at the injectors and identify any breaks in the circuit.
• Repair or replace any damaged wiring or connectors as necessary.
• Confirm the integrity of the ECM and its function in controlling the fuel injectors.