P0438 OBD II Trouble Code Catalyst Temperature Sensor Circuit High (Bank 2, Sensor 1)

How to diagnose, repair, and info on causes of a P0438 engine code which involves the bank 2 sensor 1 catalyst temperature oxygen sensor circuit which is high. Also includes links to relevant forum topics on the code.

Symptoms of P0438 OBD II Trouble Code

Common Causes of P0438 OBD II Trouble Code

Severity of P0438 OBD II Trouble Code