DTC P00D3-04: HO2S Heater Control Circuit Range/Performance (Bank 2 Sensor 1) - System internal failures: Action
- Refer to the appropriate system wiring diagrams and check heated oxygen sensor circuit for short circuit to ground, short circuit to power, open circuit, high resistance
- Inspect connectors for signs of water ingress, and pins for damage and/or corrosion
- Refer to PINPOINT TEST A: MISFIRE PINPOINT TEST .