O2 Oxygen Sensor Upstream Downstream for Kia Cadenza Sorento (2011-2018) 3.3L 3.5L

Direct-Fit Upstream & Downstream Oxygen Sensors for 2011-2018 Kia Cadenza,Sorento (VG / XM / UM)

What it Does: This matched 4-piece oxygen sensor kit monitors pre- and post-catalyst exhaust oxygen on 2011-2018 Kia Cadenza and Sorento (VG, XM, UM) V6 engines to regulate closed-loop fueling and catalyst efficiency.

The Stock Kia Cadenza,Sorento Sensor Failure

Factory oxygen sensors on the VG, XM, and UM chassis with the G6DC 3.5L V6 or G6DH 3.3L V6 endure severe exhaust manifold heat soak. Carbon deposits and oil vapors poison the porous zirconia sensing element, slowing voltage response. Meanwhile, thermal cycling degrades internal heater windings and connector seals, triggering heater circuit faults like P0135 and P0155 alongside slow-response codes P0133 and P0153.

Common Symptoms of a Failing OEM Oxygen Sensor

• Check Engine Light / DTCs: Stored codes like P0135, P0155, P0133, or P0420/P0430 from open heater circuits or lazy sensor switching.
• Unstable Fuel Trims & Hesitation: Skewed Bank 1 and Bank 2 feedback forces erratic closed-loop fuel corrections and rough idle under load.
• High Fuel Consumption & Emissions Failure: A fouled sensor biases fueling rich, contaminating catalytic substrates and failing OBD-II readiness checks.

The Direct-Fit Zirconia Oxygen Sensor Solution

Replacing all four sensors as a matched set restores balanced closed-loop fueling across both cylinder banks on your G6DC or G6DH V6. Each sensor features a laser-welded stainless housing, thermal-shock-resistant zirconia ceramic element, and high-temp PTFE harness insulation. Built to replace OEM 39210-3CAA0 and 392103CAA0, the direct-fit connectors lock straight into your factory engine harness with zero splicing required.

What's Included

• 2 Upstream Oxygen Sensors
• 2 Downstream Oxygen Sensors

Technical Specifications

Compatibility

• 2014-2016 Kia Cadenza (VG) — 3.3L V6 (G6DH)
• 2011-2013 Kia Sorento (XM) — 3.5L V6 (G6DC)
• 2014-2018 Kia Sorento (XM / UM) — 3.3L V6 (G6DH)

Frequently Asked Questions & Fitment Warnings

Does this fit the VG, XM, and UM Cadenza,Sorento?

Yes. This kit is a direct fit for the 2011-2018 Kia Cadenza,Sorento equipped with the G6DC 3.5L V6 or G6DH 3.3L V6 engine. Excludes 4-cylinder 2.4L and 2.0T models; confirm V6 engine displacement before ordering.

Will this clear P0135, P0155, or P0420/P0430 codes?

Yes, when caused by worn sensors. New upstream and downstream sensors resolve heater faults (P0135, P0155) and false P0420/P0430 triggers, though damaged catalytic converters still require replacement.

Are OEM connectors included and ready for installation?

Yes. All four sensors feature factory-style plugs for direct connection; apply anti-seize only to the exhaust bung threads and reset ECM fuel trims after installation.

The Kia Precision Standard

Engineered for exact voltage response and high thermal durability, this matched 4-sensor set restores factory closed-loop ECM calibration on your Kia V6. Maintain clean emissions compliance and reliable, CEL-free operation across daily driving.