P0226 Throttle/Pedal Position Sensor/Switch C Circuit Range/Performance

P0226 points to throttle or pedal position sensor C range/performance. The C signal is present but implausible compared with expected travel.

Code details

Generic OBD-II · P0

System: Fuel / Air
Code type: Generic (SAE / ISO controlled)
Standard: SAE J2012 / ISO 15031-6

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not diagnose range/performance from a static reading; verify sweep data and redundant-track correlation.

Symptoms of P0226

Check-engine light on, sometimes with rough or uneven running.
Hesitation, surging, or a noticeable change in fuel economy.
Occasionally hard starting or a smell of unburnt fuel.

Common causes of P0226

A failing or contaminated sensor (MAF, MAP, oxygen or air-fuel sensor).
Intake or vacuum leaks, or an exhaust leak near an upstream sensor.
Wiring, connector, or fuel-delivery problems that skew the reading.

Useful checks before replacing parts

Compare sensor C voltage with sensor A and B during slow pedal or throttle movement and look for dead spots or jumps.
Inspect connector fit, ground stability, reference voltage, pedal or throttle wear, harness flex points, and water intrusion.
Check whether range/performance appears only at idle, wide open throttle, vibration, heat, or one pedal travel region.

Related OBD-II codes

These nearby fuel / air entries can help compare wording and pin down the fault area.