Ford P0434 OBD-II Trouble Code Definition: P0434 Heated Catalyst Temperature Below Threshold Bank 2 P0434 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P0434 Heated Catalyst Temperature Below Threshold What does the code mean? OBD-ii Code P0434 definition: The optical sensor provides a high resolution signal to the Powertrain Control Module (PCM) by counting pulses on the […]