Codes P0030 and P0135, where is the Upstream O2 Sensor located?

2013 HYUNDAI ELANTRA
162,000 MILES • 1.8L • 4 CYL • 2WD • MANUAL
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NILS SVEIN
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My car is throwing two codes P0030 and P0135:
"O2 Sensor Heater - Heater Control Circuit (Bank 1 / Sensor 1)"

Sounds like I will need to replace my upstream oxygen sensor. The problem is I don't where the sensor is on this specific year/model.
Dec 15, 2022 at 6:05 PM
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JACOBANDNICKOLAS
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Hi,

The upstream (Sensor 1) o2 sensor is in the exhaust manifold. If you take a look at pic 1, I highlighted where to look. Picture 2 just indicates that number 10 in the picture is bank 1 sensor 1.

The last pic shows a view from the back of the engine (against the firewall). I circled the sensor.

If you plan to replace it, here is a link you may find helpful:

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

Let me know if this helps or if you have other questions.

Take care,

Joe

See pics below.

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Dec 15, 2022 at 9:15 PM