Learn what P0047 means, its causes, and how to fix it quickly. Follow our simple guide to resolve P0047 and get your equipment back to full functionality.
P0047 is a generic diagnostic trouble code (DTC) indicating a fault with the Oxygen Sensor Heater Control Circuit Low (Bank 2, Sensor 2). This code means the heater circuit on Bank 2, Sensor 2 is receiving too low of a signal, preventing the oxygen sensor from heating properly. This results in poor engine performance and increased emissions.
The P0047 code can be caused by:
To resolve the P0047 code, follow these steps:
To prevent the P0047 fault code:
Perform routine diagnostics to catch early issues and prevent major problems.