P2291 Fault Code

Injector Control Pressure Too Low Engine Cranking

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

The P2291 fault code indicates that the injector control pressure is too low while the engine is cranking. This means that the pressure in the fuel system responsible for injecting fuel into the engine cylinders is below the required level for proper operation. A low injector control pressure can lead to poor engine performance, increased emissions, and difficulty starting the vehicle.

What are the symptoms of the P2291 code?

Symptoms associated with the P2291 code may include:

• Engine cranking without starting.
• Rough idle or stalling once the engine is running.
• Poor acceleration or decreased engine power.
• Check Engine Light (CEL) illuminated on the dashboard.
• Unusual fuel consumption patterns.

What causes the P2291 code?

Common causes of the P2291 code include:

• Insufficient fuel supply from the fuel pump.
• A malfunctioning fuel pressure regulator.
• Blockages or leaks in the fuel lines.
• Faulty injectors that are not functioning correctly.
• Issues with the engine control module (ECM) that affect fuel injection parameters.

How to fix P2291?

To resolve a P2291 code, the following steps are typically recommended:

• Inspect the fuel pump and ensure it is delivering adequate pressure.
• Check the fuel pressure regulator for proper operation.
• Examine the fuel lines for any blockages or leaks.
• Test and replace faulty fuel injectors, if necessary.
• Clear the fault codes and perform a test drive to confirm that the issue is resolved.