Code Definition

P0228 — Throttle/Pedal Position Sensor/Switch C Circuit High Input

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P0228

P0228 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P0228 is stored, the module has detected a signal or supply voltage higher than the expected operating range; and a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P0228 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The P0228 fault code is set when the Engine Control Module (ECM) detects a higher than expected input signal from the Throttle Position Sensor (TPS) or Pedal Position Sensor (PPS) in the 'C' circuit. This sensor is important for monitoring the position of the throttle or accelerator pedal, which the ECM uses to control the fuel injection and engine power output. A high input signal in this circuit may suggest an electrical problem, such as a short to power, a malfunctioning sensor, or issues with the wiring or connectors. This condition can cause erratic throttle response, increased engine spe...

Join TaT to view the complete code information and diagnostic details.

Quick Facts