P0223 OBD-II Trouble Code: Throttle/pedal position switch/sensor B circuit high output

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P0223 is a diagnostic trouble code (DTC) for "Throttle/pedal position switch/sensor B circuit high output". 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. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

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P0223 code definition

Throttle/Pedal Position Sensor/Switch B Circuit High Input

What the P0222 code means

The P0222 code is an indication that the Engine Control Module (ECM) has detected voltage from the throttle position sensor to have exceeded the acceptable range of voltage set by the manufacturer.

What are the causes of the P0223 code?

  • A faulty throttle position sensor

  • A faulty ECM

  • A damaged, unplugged, or broken wiring harness that is associated with the throttle position sensor.

  • A malfunction within the throttle body

  • A throttle position sensor that is out of alignment

What are the symptoms of the P0223 code?

  • Loss of power
  • Poor acceleration
  • Engine may be hard to start or not start at all
  • Accelerator pedal may be unresponsive
  • The Check Engine Light will be illuminated

How does a mechanic diagnose the P0223 code?

A mechanic may diagnose the P0223 code by visually inspecting the throttle body and everything connected to it to ensure that everything is operating properly. This would include making sure the throttle position sensor is properly aligned to the throttle body, and that the throttle body itself is functional.

This inspection would also include ensuring that all electrical connectors are plugged in and secured properly. If the throttle body and all associated parts pass the visual inspection, the next step would be to test the throttle position sensor to make sure it is producing the correct voltage with a digital multimeter, using the procedure recommended by the manufacturer.

If the throttle position sensor fails the voltage test, the mechanic would then replace the throttle position sensor at the customer’s request. If the throttle position sensor passes the voltage test, the mechanic would then use a high tech scan tool to test the ECM for faults, as it is one of the last parts remaining unchecked in this system.

Common mistakes when diagnosing the P0223 code

An easy mistake to make when diagnosing the P0223 code would be to replace the throttle position sensor first. It is always best practice to fully test all parts of a system that is malfunctioning to correctly diagnose the root cause of the problem. This will help to avoid wasted time and money.

How serious is the P0223 code?

This code can cause the vehicle to perform much worse than it should, which is cause to rank the P0223 code high on the seriousness scale. I would recommend having the vehicle diagnosed and repaired as soon as possible in order to save fuel and time when driving your vehicle.

What repairs can fix the P0223 code?

Additional comments regarding the P0223 code?

In order to help prevent getting a P0223 code in the first place, it is a good idea to keep up on regular throttle body cleanings. The throttle body should be cleaned with throttle body cleaner and wiped out with a clean towel at least once a year or every time the air filter is replaced. This will keep the throttle body operating smoothly and may help prevent future problems.

Need help with a P0223 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

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