DTC P0030 indicates that the heater control circuit of oxygen sensor 1 on the first cylinder bank is malfunctioning. This heated device is located upstream of the car's cat converterand used to monitor the oxygen content in the exhaust. The engine control module (ECM) uses this information to achieve the ideal air-fuel ratio. The heater is supposed to warm the sensor up so that it can reach the operating temperature quickly, shortening the time it takes for the engine to enter a closed cycle.
Common causes of code P0030It means that a problem has been detected with the upstream oxygen sensor on engine cylinder bank 1.
It is normally the result of a short or open in the ground or power supply circuit, a damaged heater circuit or device, or an incompatible sensor.
You should still be able to drive your car under these conditions. However, it is better to address the problem promptly to avoid high fuel consumption and regain engine stability.
Fault code P0030 - HO2S Heater Control Circuit (Bank 1, Sensor 1) can occur with any car but is most often found on the following cars:
If you get the code P0030 on your car, make sure that the diagnostics are carried out correctly and the error is still relevant. Check for symptoms associated with the problem and explore options for resolving it.
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