Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's engine has a part called the throttle that helps control how fast it goes. This code means that the throttle is not moving as smoothly as it should on one side of the engine.
The throttle controls the amount of air entering the engine. If it's tight, it can affect engine performance.
The P11AA code indicates that the throttle body on bank 1 of the engine is experiencing resistance or is not operating smoothly. This could be due to mechanical binding, electronic control issues, or buildup of deposits that restrict movement.
• Poor engine performance
• Reduced fuel efficiency
• Check Engine Light illuminated
• Mechanical binding in the throttle body
• Carbon buildup on the throttle plate
• Faulty throttle position sensor
Throttle: A device that controls the amount of air entering the engine.
Bank 1: The side of the engine that contains cylinder number 1.
• Perform a visual inspection of the throttle body for obstructions.
• Check for carbon buildup and clean if necessary.
• Test the throttle position sensor for proper operation.
• Clean the throttle body and remove any carbon deposits.
• Replace the throttle position sensor if faulty.
• Lubricate the throttle linkage if necessary.
• OBD-II scanner
• Throttle body cleaner
• Basic hand tools
$150 - $400
Moderate
• Toyota Camry
• Honda Accord
• Ford F-150
• Regularly clean the throttle body.
• Use quality fuel to reduce carbon buildup.
• Perform routine maintenance checks.
Engine Performance
• If you notice poor acceleration, have the throttle body checked.
• Regular maintenance can prevent this issue.
Check your vehicle's warranty for coverage on engine components.
Throttle-related codes have been common as vehicles have transitioned to electronic throttle control systems.
Moderate – It should be addressed soon to avoid further engine performance issues.
Driving with a malfunctioning throttle can lead to unsafe driving conditions.
• Engine at operating temperature
• Vehicle at idle and under load
The throttle body is located between the air filter and the intake manifold on the engine.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to reduced engine performance and increased fuel consumption.
Q: Can I drive my car with this code?
A: You can drive, but it's best to address the issue soon to prevent further problems.
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