Ford P0426 OBD-II Trouble Code Definition: P0426 Catalyst Temperature Sensor Range/Performance Bank 1 Sensor 1 P0426 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P0426 Catalyst Temperature Sensor Range/Performance What does the code mean? OBD-ii Code P0426 definition: The optical sensor provides a high resolution signal to the Powertrain Control Module (PCM) by counting pulses on the […]