Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is saying that a spring in the engine that helps control how much air goes in isn't working right. It's like a door that won't open when you push it.
The throttle valve actuator is responsible for controlling the throttle opening. This code indicates that the spring responsible for returning the throttle to its closed position is not functioning properly.
The P1629 code is triggered when the Engine Control Module (ECM) detects that the throttle valve actuator spring does not open as expected during the spring test. This could mean the spring is stuck or broken, preventing the throttle from closing properly.
• Check Engine Light is on
• Poor engine performance
• Unresponsive throttle
• Faulty throttle valve actuator
• Broken or stuck throttle spring
• Wiring issues or poor electrical connections
Throttle Valve Actuator: A device that controls the opening and closing of the throttle valve.
ECM: Engine Control Module, the computer that manages engine functions.
• Connect an OBD-II scanner to check for codes.
• Inspect the throttle valve actuator and spring for damage.
• Check wiring and connections to the throttle actuator.
• Replace the throttle valve actuator if faulty.
• Repair or replace the throttle spring if broken.
• Fix any wiring issues or poor connections.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $400
Moderate
• Toyota Camry
• Honda Accord
• Ford Focus
• Regular maintenance checks
• Keep throttle body clean
• Inspect wiring periodically
Engine Performance Issue
• Do not ignore the Check Engine Light.
• Get the vehicle inspected by a professional.
• Avoid driving at high speeds until the issue is resolved.
Check with your vehicle manufacturer for warranty coverage on throttle components.
The P1629 code has been associated with throttle actuator issues in vehicles with electronic throttle control systems.
Moderate – It's important to address this issue to avoid potential engine performance problems.
Driving with a malfunctioning throttle can lead to unsafe driving conditions. Address the issue promptly.
• Engine at operating temperature
• Vehicle in idle condition
The throttle valve actuator is located on the throttle body, which is typically found on the intake manifold.
Q: Can I drive my car with a P1629 code?
A: It's not recommended to drive for long periods with this code, as it may affect engine performance.
Q: How do I clear a P1629 code?
A: After repairs, use an OBD-II scanner to clear the code, or disconnect the battery for a few minutes to reset the ECM.
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