O2 Oxygen Sensor Upstream Downstream for Hyundai Santa Fe (2010-2016) 2.4L

Direct-Fit Upstream & Downstream O2 Sensor Kit for 2010-2016 Hyundai Santa Fe (CM/DM)

What it Does: This upstream and downstream oxygen sensor kit restores closed-loop air-fuel feedback and catalyst monitoring on 2010-2016 Hyundai Santa Fe CM/DM 2.4L models.

The Stock Hyundai Santa Fe Sensor Failure

Factory oxygen sensors on the CM/DM platform running the G4KE/G4KJ 2.4L engine endure constant thermal shock and exhaust contamination. Over time, oil ash and carbon deposits foul the sensing tip while internal heater elements fatigue and open. Once sensor switching slows, the ECU loses accurate closed-loop fuel trim authority, triggering P0133, P0135, or P0171 fault codes and erratic fuel trims.

Common Symptoms of a Failing OEM Oxygen Sensor

• DTCs & CEL: Triggers P0133, P0135, or P0420 from sluggish switching or heater failure.
• Rough Running: Default open-loop fueling causes rich exhaust odor and unstable idle.
• Failed Emissions: Skewed fuel trims lower MPG and prevent OBD-II readiness completion.

The Direct-Fit Zirconia Sensor Solution

This matched upstream and downstream kit replaces OEM numbers 39210-2C210, 39210-2G100, and 234-5029 with direct-fit assemblies engineered to match factory voltage curves. Each unit features a thermally stabilized zirconia ceramic element inside a corrosion-resistant stainless steel shell for durability. Factory-indexed weatherproof connectors plug directly into the CM/DM harness with zero splicing, restoring fast light-off and precise stoichiometric control.

What's Included

• 1 Upstream Oxygen Sensor
• 1 Downstream Oxygen Sensor

Technical Specifications

Compatibility

• 2010-2016 Hyundai Santa Fe (2.4L)
• 2013-2016 Hyundai Santa Fe Sport (2.4L)

Frequently Asked Questions & Fitment Warnings

Does this fit the CM/DM Santa Fe?

Yes. Direct fit for 2010-2016 Hyundai Santa Fe G4KE/G4KJ 2.4L models. Excludes 2.0T and V6 trims; confirm engine before ordering.

Will this clear P0133 or P0135 codes?

Yes, if sensor-related. Replacing both sensors restores voltage and heater resistance after clearing ECU memory; worn catalysts still trigger P0420.

Are OEM connectors included for installation?

Yes. Factory-style connectors plug directly into the CM/DM harness with zero splicing required.

The Hyundai Precision Standard

Built for daily-driven reliability, this matched sensor kit restores factory ECU fuel control and emissions compliance for clean, CEL-free 2.4L operation.