P0291 Code - Cylinder 11 Injector Circuit Low

What Does P0291 Mean?

OBD-II Code Decreased engine performance is defined as a Cylinder 11 Injector Circuit Low

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 P0291.

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What are the common causes of P0291 ?

Oddly enough, the number one cause for this code being stored is actually squirrels. These little critters and other wildlife often find a way up into your hood because they recognize that your engine is warm for a long time after it’s parked. Not content to simply rest and be warm, though, these animals may decide to chew through important wires that leave you with fuel injectors unable to operate as they should.

There are a few other reasons you should know about too:

• A defective fuel injector
• Loose electrical wiring
• Corrosion on the electrical wiring
• Damaged connector faces

How do you troubleshoot P0291 ?

The valves of each cylinder are kept closed using a pair of arms that replace the conventional engine's roller-type rocker arm. P0291 code one of these arms follows the cam profile while the second arm connects to the valves. During normal engine operation the two arms are joined by a locking pin.

Searches related to P0291 Code - Cylinder 11 Injector Circuit Low

• p0290
• p0292