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Engine-Codes – Generic – P2291

P2291 Code - Injector Control Pressure Too Low Engine Cranking

Quick Answer

The P2291 code indicates that the Injector Control Pressure (ICP) in the engine is too low when the engine is cranking. Common causes include Faulty ICP sensor, Leaking high-pressure oil system, Clogged fuel filter. 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
P2291 indicates Injector Control Pressure Too Low Engine Cranking.
Common causes
Common causes include Faulty ICP sensor, Leaking high-pressure oil system, Clogged fuel filter.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P2291 Description

The P2291 code indicates that the Injector Control Pressure (ICP) in the engine is too low when the engine is cranking. The ICP is a crucial factor in the operation of the fuel injectors in a vehicle's engine. When the ICP is too low, it can lead to a variety of performance issues. This code is often seen in vehicles with diesel engines, as the high-pressure fuel system relies heavily on the proper function of the ICP sensor.

OBDII Code P2291 - Injector Control Pressure Too Low Engine Cranking
P2291 Code - Injector Control Pressure Too Low Engine Cranking

Common Causes of P2291

  1. Faulty ICP sensor
  2. Leaking high-pressure oil system
  3. Clogged fuel filter
  4. Issues with the fuel pump

Symptoms of P2291

  1. Rough idling
  2. Hesitation or stalling when accelerating
  3. Reduced fuel efficiency
  4. Decreased engine power

How to Fix P2291

  1. Perform a diagnostic scan to confirm the P2291 code and identify the specific cause.
  2. Inspect the ICP sensor and replace it if faulty.
  3. Check for any leaks in the high-pressure oil system and repair as necessary.
  4. Replace the fuel filter to ensure proper fuel flow.
  5. Test the fuel pump to ensure it is functioning correctly and replace if needed.

Cost to Fix P2291

The cost of repairing a P2291 code can vary depending on the specific cause and the make and model of the vehicle. On average, the parts and labor for this repair could range from $200 to $500. It's important to note that prices can vary significantly based on the location and the repair shop's rates. It's recommended to get quotes from multiple shops to ensure a fair price for the repair.

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Code P2291 Information for Specific Makes

  • P2291 Dodge — Injector Control Pressure Too Low Engine Cranking
  • P2291 Ford — Injector Control Pressure Too Low Engine Cranking
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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