The P2480 code indicates that the engine control module has detected an open circuit in the Exhaust Gas Temperature (EGT) sensor circuit for Bank 1, Sensor 5. This means the electrical path is broken, and the computer is not receiving a valid temperature signal from the sensor.
The internal sensing element of the sensor has failed or worn out, creating an internal open circuit.
Wires may be frayed, melted, or broken due to extreme exhaust heat or vibration.
Moisture or road salt has caused corrosion at the sensor plug, interrupting the electrical connection.
The sensor connector is not fully seated or has vibrated loose.
An internal fault in the engine control module's processing circuit for this specific sensor.
The vehicle is usually drivable, but it may enter a reduced-power mode to protect the exhaust system and turbocharger from overheating.
No, this code refers specifically to the electrical circuit of the temperature sensor, not the chemical efficiency of the catalyst.
No. It is far more common for there to be a break in the wiring harness or a corroded pin than for the PCM to fail. Exhaustively test the wiring before considering a module replacement.