Code result
P0221
Throttle/Pedal Position Sensor/Switch B Circuit Range/Performance
High severity
What it means
The B channel of the throttle or pedal position sensor reports values that do not correlate with the A channel or with engine load. Often caused by mechanical wear in the resistive track or by a sticking pedal/throttle plate.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Resistive track worn
highOne of the most commonly reported causes for this code — check this first.
Throttle plate sticking
mediumA plausible cause — test and verify before replacing parts.
Sensor element aged beyond calibration window
lowLess common, but worth ruling out after the more likely causes.
Related help
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