Drive with caution — fix soon.
This code means there's a general malfunction in the third throttle or pedal position sensor circuit (sensor C), so its signal isn't reliable. It's typically caused by a failing sensor, damaged wiring, or a corroded connector in that circuit. Repairs usually involve testing the circuit and replacing the sensor or fixing the wiring, and it's generally fixable without major engine work.
$120 – $420
Varies by vehicle and root cause.
For short trips, usually yes, but the car may limit power for safety. Since throttle response can be affected, it's best to get it checked promptly rather than relying on it.
Most repairs land between $120 and $420. Replacing the throttle position sensor is the most common fix, while wiring or connector repairs can shift the cost.
It's moderately serious. The car often still runs, but unreliable throttle behavior is a safety concern, so it shouldn't be ignored.
Some throttle systems use three position sensors that cross-check each other. The 'C' circuit refers to the third of these, and P0226 means the computer detected a fault in that specific sensor circuit.