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P0220 is a diagnostic trouble code (DTC) for "Throttle/Pedal Position Sensor/Switch Circuit "B" Malfunction". 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.
Throttle/pedal position sensor/switch circuit B malfunction.
The P0220 code means that the vehicle’s powertrain control module has detected a voltage or resistance reading that is outside of specifications that were set by the manufacturer for this circuit.
A mechanic may diagnose the P0220 code by first inspecting the throttle body and the accelerator pedal for any wiring that may be damaged or disconnected.
The mechanic would also check to ensure that all sensors appear to be in alignment and installed properly. If any issues were found during this inspection, the mechanic would need to resolve them before continuing this diagnosis.
If all of this criteria has been met, the mechanic would then test the throttle position sensor and the pedal position sensor for proper function. If either of these two sensors test bad, the replacement of the sensor would likely resolve this issue.
If the sensors proved to be functional, the problem may be within the powertrain control module.
A common mistake when diagnosing the P0220 would be to replace the throttle position sensor, the pedal position sensor, or both since these parts are mentioned in the actual definition. This can often times lead to a misdiagnosis. Just because a part is mentioned in a trouble code definition does not mean that that is the part causing the problem.
The P0220 code is moderately serious. The symptoms that could be associated with this code could be quite an annoyance to the driver. A vehicle that does not accelerate well is not very valuable to the owner. This may convince the owner to fix the problem more quickly than if it had a problem of less significance.
It is a good idea to inspect and clean the throttle body on your vehicle regularly. This service should be done at least once or twice a year and is fairly easy to do on most vehicles. If the throttle body has been maintained regularly it is unlikely that a loose or disconnected wiring harness would go unnoticed for long. Keeping up on throttle body cleanings may help to prevent a P0220 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.