P2009 Fault Code

Intake Manifold Runner Control Circuit Low Bank 1a

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

The P2009 fault code refers to an issue with the Intake Manifold Runner Control (IMRC) circuit on Bank 1a. The IMRC system is responsible for optimizing the air-fuel mixture entering the engine by adjusting the position of the intake manifold runners. When the circuit signal is lower than expected, the engine may not perform efficiently.

What are the symptoms of the P2009 code?

• Check Engine Light (CEL) illuminated
• Poor engine performance, such as reduced power or acceleration
• Rough idling or stalling
• Increased emissions from the exhaust
• Unusual engine noises due to improper air-fuel mixture

What causes the P2009 code?

• Faulty intake manifold runner control actuator
• Damaged or shorted wiring and connectors in the IMRC circuit
• Faulty Engine Control Module (ECM)
• Vacuum leak affecting the intake manifold pressure
• Carbon build-up in the intake manifold affecting actuator operation

How to fix P2009?

• Inspect the intake manifold runner control actuator for functionality.
• Check and repair any damaged wiring or connectors in the IMRC circuit.
• Clean or replace the intake manifold if carbon build-up is present.
• Replace the IMRC actuator if it is found to be faulty.
• Clear the fault code and test drive to ensure the issue is resolved.