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 is having trouble getting information about how much the gas pedal is being pressed. It's like when your video game controller doesn't know if you're pressing the 'go' button.
The P2621 code indicates that the vehicle's engine control module (ECM) has detected a low voltage signal from the throttle position sensor output circuit.
The throttle position sensor (TPS) is responsible for monitoring the position of the throttle in the engine. This sensor sends a voltage signal to the ECM to indicate the throttle position. A 'low' circuit condition means the signal voltage is below the expected range, suggesting a potential problem with the sensor, wiring, or connections.
• Check Engine Light is on
• Poor engine performance
• Engine stalling or hesitation
• Faulty throttle position sensor
• Wiring issues or poor connections in the throttle position sensor circuit
• ECM malfunction
Throttle Position Sensor: A device that monitors the position of the throttle in an internal combustion engine.
ECM: Engine Control Module, the computer that controls the engine's operation.
• Use an OBD-II scanner to confirm the code.
• Inspect the throttle position sensor and its wiring for damage.
• Test the voltage and ground signals at the throttle position sensor connector.
• Replace the throttle position sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $400
Moderate
• Toyota Camry
• Honda Accord
• Ford F-150
• Regularly inspect and maintain the throttle body and sensors.
• Ensure all electrical connections are secure and free of corrosion.
• Use quality replacement parts when servicing the throttle system.
Sensor Issue
• Avoid driving the vehicle until the issue is resolved to prevent further damage.
• Consult with a professional mechanic for accurate diagnosis and repair.
Check with your vehicle manufacturer as some throttle components may be covered under warranty.
The P2621 code has been commonly reported in vehicles with electronic throttle control systems, especially as they age.
Moderate – It is advisable to address this issue soon to avoid potential drivability problems.
Driving with a malfunctioning throttle position sensor can lead to unexpected vehicle behavior, posing safety risks.
• Engine running
• Vehicle in park or neutral
The throttle position sensor is typically located on the throttle body, which is connected to the intake manifold.
Q: Can I drive with a P2621 code?
A: It's not recommended to drive with this code as it can lead to poor engine performance and safety issues.
Q: How can I prevent a P2621 code?
A: Regular maintenance and inspection of the throttle system can help prevent this code from occurring.
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