P2291 - OBD II Trouble Code

Our automotive experts have put together the following information about the P2291 diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P2291 code.

What Does P2291 Code Mean?

OBD-II Code P2291 is defined as a Injector Control Pressure Too Low - Engine Cranking

The Injector Control Pressure Sensor (ICP) monitors the oil pressure that controls the fuel injectors. If the oil pressure is too low, the injectors will not operate correctly. The engine computer (PCM) monitors fuel pressure when the engine is running. If the oil pressure is too low, code P2291 will be stored.

P2291 Symptoms

• Engine may not start
• Engine may stall

Common Problems That Trigger the P2291 Code

• Engine oil level is too low
• High pressure oil pump failure
• Injector Control Pressure (ICP) sensor failure
• Wiring issue

Common Repairs Needed for the P2291 Code

• Oil and Filter Change
• Oil Pump Replacement