P2118Throttle Actuator Control

Throttle Actuator Control Motor Current Range/Performance

P2118 means the ECM measured throttle actuator control motor current outside the expected range, indicating the motor is drawing too much or too little current to move the throttle correctly.

🚗 Not recommended. Abnormal motor current can force limp mode.

HIGH

severity

🎯 Top Causes, Ranked by Likelihood

#1Failed throttle actuator motor / throttle body$150-$600

45%

A worn or binding motor draws abnormal current.

#2Carbon buildup causing a binding plate$0-$300

25%

A dirty throttle bore raises motor load and current.

#3Wiring or connector resistance$50-$300

20%

High-resistance connections skew measured current.

#4ECM driver fault$200-$1200

10%

A failed driver misreads or misdrives the motor.

🩺 Common Symptoms

Reduced power / limp mode
Check engine light
Erratic throttle response
Rough or high idle
Hesitation

💰 Repair Cost: DIY vs Shop

DIY Cost

$0-$600

Shop Cost

$150-$900

📋 Free OBD2 Code Cheat Sheet

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

🔧 How to Diagnose P2118

1Clean the throttle body and check for a binding plate

2Read live data for throttle position tracking

3Inspect the motor wiring and connector for resistance

4Replace the throttle body if the motor draws abnormal current

❓ Frequently Asked Questions

Can I drive with a P2118 code?

Avoid it. It commonly forces limp mode with reduced power.

How much does it cost to fix P2118?

Cleaning may be cheap, but a throttle body runs $150-$900 at a shop.

What causes P2118?

Usually a failing throttle actuator motor or carbon buildup that raises motor current.

🔗 Related Codes

P2100P2101P2119P2110P2135