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P0224 is a diagnostic trouble code (DTC) for "Throttle/Pedal Position Sensor/Switch B Circuit Intermittent". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
Throttle/pedal position sensor/switch B circuit intermittent is the technical definition of this trouble code.
The P0224 code means that the powertrain control module (PCM) is detecting intermittent voltage readings from the throttle position sensor. This sensor should be producing a constant signal voltage to indicate to the powertrain control module the position of the butterfly valve within the throttle body.
A mechanic may diagnose the P0224 code by popping the hood and visually inspecting the throttle body and the throttle position sensor for anything that looks out of the ordinary. This inspection would include verifying that the throttle position sensor is plugged in and aligned correctly and making sure that the throttle body itself is functional.
If everything passes the visual inspection, the mechanic would then test the throttle position sensor for proper function using the manufacturer’s recommended procedure. If the throttle position sensor does not pass this test, the mechanic would replace the throttle position sensor at the customer’s request. If the throttle position sensor does pass the test, the mechanic would then use a high tech scan tool to test the powertrain control module for proper function if it has failed and needs to be replaced.
Just like a P0222 or P0223 code, a common mistake that could be made with a P0224 code would be to replace the throttle position sensor without properly testing it. It is always best practice to use the manufacturer’s diagnostic procedure as long as it is available.
Considering that this code can cause driveability issues, I would consider this code to be serious. Most drivers would not enjoy having the loss of power symptom on their drive to work, especially if they were running late. This might persuade the driver to repair the issue sooner than later.
It is a good idea to keep up on basic throttle body maintenance in order to help prevent a P0224 code. This would include spraying the throttle body out with throttle body cleaner and wiping it out with a clean rag. This should be done yearly or biyearly.
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