P2009Fuel & Air Metering

Intake Manifold Runner Control Circuit Low Bank 1

P2009 means the ECM detected a low voltage condition in the intake manifold runner control circuit for Bank 1. This usually indicates a short to ground in the wiring or a shorted actuator. It affects how the runner flaps are commanded.

🚗 Yes, but the runner control fault should be repaired soon.

MEDIUM

severity

🎯 Top Causes, Ranked by Likelihood

#1Short to ground in the control wiring$50-$250

40%

A chafed or pinched wire shorts the control signal to ground.

#2Failed IMRC actuator or solenoid$100-$400

30%

An internally shorted actuator pulls the circuit voltage low.

#3Corroded or damaged connector$50-$200

20%

Moisture or corrosion in the connector creates a low-voltage path.

#4ECM driver fault$200-$1000

10%

Rare failure of the control driver inside the ECM.

🩺 Common Symptoms

Check engine light on
Possible reduced power
Uneven idle in some engines
May fail an emissions test

💰 Repair Cost: DIY vs Shop

DIY Cost

$50-$400

Shop Cost

$150-$650

📋 Free OBD2 Code Cheat Sheet

The 50 most common codes with likely cause and DIY fix cost. Sent once, no spam.

🔧 How to Diagnose P2009

1Scan for related IMRC codes and review freeze frame

2Inspect the wiring for shorts to ground

3Test the actuator resistance for an internal short

4Check the connector for corrosion or damage

❓ Frequently Asked Questions

Can I drive with a P2009 code?

Short-term yes, but repair the circuit fault soon to keep the runner control working and pass emissions.

How much does it cost to fix P2009?

Wiring fixes can be inexpensive, while a new actuator raises the cost to $150 to $650 at a shop.

What is the most common cause of P2009?

A short to ground in the control wiring is the most common cause, followed by a shorted actuator.

🔗 Related Codes

P2008P2010P2004P2006P2015