P0221 OBD-II Trouble Code: Throttle/Pedal Position Sensor/Switch B Circuit Range/Performance Problem

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Cost of diagnosing the P0221 code

P0221 is a diagnostic trouble code (DTC) for "Throttle/Pedal Position Sensor/Switch B Circuit Range/Performance Problem". 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.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$70.00$30.00
Toyota$70.00$30.00
BMW$70.00$30.00
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Check Engine Light

P0221 Code Definition

Throttle/Pedal Position Sensor/Switch B Circuit Range/Performance problem

What the P0221 code means

This code means that the voltage or resistance in the circuitry of the throttle position sensor has fallen out of the acceptable range specified by the manufacturer.

What are the causes of the P0221 code?

A faulty throttle position sensor Damaged or loose wiring associated with the throttle position sensor Throttle body malfunction A faulty powertrain control module A misaligned throttle position sensor

What are the symptoms of the P0221 code?

Engine does not start Engine runs rough Hesitation or stumble Loss of power or poor acceleration

How does a mechanic diagnose the P0221 code?

  • Inspects the throttle body for any obvious damages.

  • Plugs in or repairs any electrical connectors that are unplugged or damaged

  • Ensures that the throttle position sensor is installed correctly

  • Tests the sensor using the manufacturer’s recommendations

If no problems are found with the throttle body position sensor, it is possible that the Engine Control Module (ECM) may have an issue.

Common mistakes when diagnosing the P0221 code

Replacing the throttle position sensor without testing it.

Many people think that just because a part is mentioned in a trouble code definition, it means that the part must be causing the problem. This can oftentimes lead to a misdiagnosis and wasted time and money.

How serious is the P0221 code?

The P0221 code is moderately serious, as it can cause several driveability problems and the engine will not perform correctly. The symptoms could cause longer drive times to work which can be very bothersome to the vehicle owner. Have this issue corrected quickly in order to get the vehicle to perform as it should again.

What repairs can fix the P0221 code?

Additional comments regarding the P0221 code?

Just like with any other Check Engine Light code, it is best to get the problem diagnosed and repaired as soon as possible in order to prevent further engine or vehicle damage.

Need help with a P0221 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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P0221
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Theodore

13 years of experience
814 reviews
Theodore
13 years of experience
Great experience on time and did everything he could to get it to perfect running condition
1990 TOYOTA COROLLA - CHECK ENGINE LIGHT IS ON - KIRKLAND, WASHINGTON

Richard

8 years of experience
350 reviews
Richard
8 years of experience
Richard did an excellent job. He was thorough at inspecting my car and explained to me all the repairs that needed to be done. He was done a lot faster than I anticipated, which I appreciated. He also knows the company well and is loyal. I highly recommend Richard!
2007 TOYOTA COROLLA - CHECK ENGINE LIGHT IS ON - SILVER SPRING, MARYLAND

Kevin

21 years of experience
90 reviews
Kevin
21 years of experience
Perfect mechanic !!! I wish I could give him more stars!!! Even installed my windshield wiper !
2010 INFINITI G37 - CHECK ENGINE LIGHT IS ON INSPECTION - DULUTH, GEORGIA

Norman

22 years of experience
16 reviews
Norman
22 years of experience
G35s tend to be problematic for some mechanics when it comes to bleeding the cooling system but not for an expert like Norman. Feel at ease and very confident that my issue has been resolved. Looking forward to booking Norman for future repairs.
2006 INFINITI G35 - CHECK ENGINE LIGHT IS ON - APOPKA, FLORIDA

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