Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer has detected a problem with the motor that controls how much the car's engine gets to 'breathe.' It's like if you were trying to breathe through a straw, and the straw got bent or blocked.
The P2118 code indicates that the throttle actuator control motor is not operating within the expected current range, which affects the throttle's ability to open and close properly.
The throttle actuator control motor is responsible for opening and closing the throttle plate, which regulates the amount of air entering the engine. The engine control module (ECM) monitors the current draw of the throttle actuator motor. If the current is outside the expected range, the ECM sets the P2118 code.
• Check Engine Light illuminated
• Reduced engine performance
• Vehicle may enter 'limp' mode
• Faulty throttle actuator motor
• Wiring issues or poor connections in the throttle actuator circuit
• Faulty engine control module (ECM)
Throttle Actuator: A motor that controls the opening and closing of the throttle plate.
ECM: Engine Control Module, the computer that manages engine functions.
• Use an OBD-II scanner to confirm the code and check for other related codes.
• Inspect the throttle actuator motor and its wiring for damage or disconnections.
• Test the throttle actuator motor for proper operation and current draw.
• Repair or replace any damaged wiring or connectors in the throttle actuator circuit.
• Replace the throttle actuator motor if it is faulty.
• Replace or reprogram the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Toyota Camry
• Ford F-150
• Honda Accord
• Regular maintenance checks of the throttle body and actuator.
• Ensure electrical connections are clean and secure.
• Avoid exposure of the throttle actuator to excessive moisture or dirt.
Engine Performance
• Do not ignore the Check Engine Light; have the vehicle inspected as soon as possible.
• Be aware of reduced engine performance and adapt driving accordingly.
Throttle actuator issues may be covered under the vehicle's powertrain warranty. Check with the manufacturer.
The P2118 code has been a common issue in vehicles with electronic throttle control systems, especially as these systems age.
Moderate – While the vehicle may still be drivable, performance is compromised, and further damage could occur if not addressed.
Driving with a malfunctioning throttle actuator can lead to reduced performance and safety risks. Address the issue promptly.
• Engine running
• Throttle actuator circuit under load
The throttle actuator is typically located on the throttle body, which is connected to the intake manifold.
Q: Can I drive with a P2118 code?
A: While you may be able to drive, it's not recommended due to reduced performance and potential safety risks.
Q: How can I reset the Check Engine Light after fixing the issue?
A: You can use an OBD-II scanner to clear the code, or disconnect the battery for a few minutes to reset the system.
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