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 part of the car that controls how much air goes into the engine isn't working properly. It's like a door that should open smoothly, but it's getting stuck.
The throttle valve actuator is responsible for controlling the throttle opening. This code indicates a malfunction in the spring test during the opening phase.
The P1628 code is triggered when the Engine Control Module (ECM) detects an issue with the throttle valve actuator's ability to open properly due to a malfunction in the spring mechanism. This can affect the air intake and engine performance.
• Reduced engine performance
• Check Engine Light illuminated
• Hesitation or stalling during acceleration
• Faulty throttle valve actuator
• Damaged or worn spring in the actuator
• Electrical issues such as wiring or connector problems
Throttle Valve Actuator: A component that controls the position of the throttle valve.
ECM: Engine Control Module, the computer that manages engine functions.
• Use an OBD-II scanner to confirm the code.
• Inspect the throttle valve actuator for physical damage.
• Check the wiring and connectors for any signs of wear or damage.
• Replace the throttle valve actuator if faulty.
• Repair or replace damaged wiring or connectors.
• Perform a throttle body cleaning if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $500
Moderate
• Toyota Camry
• Honda Accord
• Ford Focus
• Regularly clean the throttle body.
• Inspect the throttle actuator for wear.
• Ensure electrical connections are secure.
Engine Performance
• Do not ignore the Check Engine Light.
• Get the vehicle inspected by a professional.
• Avoid aggressive acceleration until the issue is resolved.
Check with your vehicle manufacturer for specific warranty coverage related to the throttle system.
This code has been more common in vehicles with electronic throttle control systems introduced in the early 2000s.
Moderate – It should be addressed soon to avoid further engine performance issues.
Driving with a malfunctioning throttle actuator can lead to decreased engine performance and potential safety risks.
• Engine running
• Throttle actuator engaged
The throttle valve actuator is typically located on the throttle body, which is connected to the intake manifold.
Q: Can I drive with a P1628 code?
A: It's possible to drive, but it's not recommended as it can affect engine performance and safety.
Q: How do I reset the Check Engine Light after fixing the issue?
A: Use an OBD-II scanner to clear the code after repairs are completed.
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