In this guide, you will learn about Kia Oxygen Sensor issues such as: Common symptoms that indicate a bad Kia oxygen sensor (O2) Fault codes related to bad oxygen sensor How to change oxygen sensor on Kia vehicles.
Owners of Kia Forte, Optima, Rio, Sorento, Soul, Sportage, Sedona, Soul, Borrego will find this guide helpful. The pictures below were taken on a 2016 Kia Optima equipped with the 2.4L Theta II engine, which is the same exact engine used in other Kia models previously mentioned and Hyundai Sonata as well. If you need help with finding Kia oxygen sensor location jump to the end of the article.
The oxygen sensors play a crucial role on your Kia's fuel and emission system. When the oxygen sensor fails on your Kia you may notice some or all of the following issues:
- Check Engine Light is ON
- Decrease in fuel economy
- Engine Hesitation or misfire
- Rough Idling
How to replace Kia Oxygen Sensor
Before you start replacing the oxygen sensor we need to identify which oxygen sensor needs to be replaced. On 2.0T and 2.4 L four-cylinder Kia engines there are two oxygen sensors. One is upstream of the catalytic converter, and one is downstream. In the following tutorial, we will show you how to replace the upstream sensor (Bank 1 Sensor 1). The procedure is the same for the downstream O2 sensor (Bank 1 Sensor 2). For the downstream sensor, you will find it easier to access the O2 sensor from underneath the car.
What you will need
Start by turning off the ignition. Next, open the hood and disconnect the negative battery terminal.
Locate the oxygen sensor
Location of upstream oxygen sensor Bank 1 Sensor 1 Kia.
Unplug the O2 connector
Remove oxygen sensor
Install new oxygen sensor
Install the new oxygen sensor on your Kia. When using a Kia OEM exact fit O2 sensor you can plug the new sensor directly into the electrical socket. If you are using a universal O2 sensor you will need to splice and connect the wires.
Tighten the new Oxygen Sensor to: 45 ~ 49 N.m (30 ~ 35 lb-ft)
If you are using a universal O2 sensor, use this link to check Kia Oxygen Sensor wiring diagram.
Kia Fault Codes indicating a bad Oxygen Sensor
This is a list of fault codes related to oxygen sensors. Note that the oxygen sensor may not always be the problem. You may have other problems such as bad wiring harness for example. You can read these codes yourself using an OBD-II code reader and clear them once you complete the repair.
Here is a partial list of Oxygen Sensor related fault codes.
|P0130 O2 Sensor Circuit Malfunction (Bank 1 Sensor 1)|
|P0131 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)|
|P0132 O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)|
|P0133 O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)|
|P0134 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)|
|P0135 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)|
|P0136 O2 Sensor Circuit Malfunction (Bank 1 Sensor 2)|
|P0137 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)|
|P0138 O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)|
|P0139 O2 Sensor Circuit Slow Response (Bank 1 Sensor 2)|
|P0140 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)|
|P0141 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)|
Kia Heated Oxygen Sensor Specifications
HO2S [Bank 1/Sensor 1]
|Heater Resistance (?)||2.5 ~ 4.0 [20?C(68?F)]|
HO2S [Bank 1/Sensor 2]
|A/F Ratio (?)||Output Voltage(V)|
|Heater Resistance (?)||3.3 ~ 4.1?[21?C(69.8?F)]|
Kia Oxygen Sensor Location
Are you looking at the right oxygen sensor? Sure you don't want to replace the wrong O2 sensor and still have the check engine light on. Finding the location of the oxygen sensor on a Kia is easy.
Location of oxygen sensor Kia (4-cylinder) cars
- Four cylinder Kia engines have only one catalytic converter (Bank 1). The upstream, O2 sensor before the cat is Sensor 1. The downstream, O2 sensor after the catalytic converter is sensor 2.
Location of oxygen sensor Kia (V6) cars, SUV, VANs
- V6 engines have two catalytic converters.Catalytic converter on the passenger side is Bank 1. Catalytic converter on driver side is Bank 2. Upstream sensors are called sensor 1, downstream sensor are Sensor 2.
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