P0436 OBD II Trouble Code Catalyst Temperature Sensor Circuit Range Performance (Bank 2, Sensor 1)

How to diagnose, repair, and info on causes of a P0436 engine code which involves the bank 2 sensor 1 catalyst temperature oxygen sensor circuit which is out of range. Also includes links to relevant forum topics on the code.

Symptoms of P0436 OBD II Trouble Code

  • Illuminated check engine light
  • Poor engine performance
  • Decreased fuel economy
  • Increased emissions

Common Causes of P0436 OBD II Trouble Code

  • Faulty oxygen sensor
  • Wiring problems
  • Exhaust air/fuel mixture out of balance
  • Faulty PCM/PCM programming

Severity of P0436 OBD II Trouble Code

The severity of this code is moderate. Symptoms of a P0436 engine code may include: