P0030 Hyundai -

Question

2005 Hyundai Elantra Code Reads: P0030 Pnd Mod 1/1 Heated Oxygen Sensor, Heater Control Circuit Bank 1 Sensor 1 but Check engine light does not go on and car seems to be running smooth.

Answer 1

P0030 Heater control circuit (Bank 1 Sensor 1)

This code is more of a intermittent codnition , it usually will be a hisory code that why the CK ENG LT does not come on for this unless it is a hard code condition , this is considered a soft code.