O2 Oxygen Sensor Upstream Downstream for Jeep Cherokee (2014-2020) 2.4L

Direct-Fit Upstream & Downstream O2 Sensor Kit for 2014-2020 Jeep Cherokee (KL)

What it Does: This matched upstream and downstream oxygen sensor kit restores closed-loop air-fuel ratio control and catalyst monitoring on the 2014-2020 Jeep Cherokee KL 2.4L.

The Stock Jeep Cherokee O2 Sensor Failure

Factory oxygen sensors on the KL chassis with the 2.4L Tigershark (ED6) engine endure constant thermal shock near the exhaust manifold. Over time, carbon soot and oil vapor contaminate the ceramic sensing element, slowing voltage switching and skewing fuel trims. Internal heater circuit burnout also triggers fault codes like P0135, P0141, P0130, and P0138, forcing rich open-loop fueling.

Common Symptoms of a Failing OEM Oxygen Sensor

• Check Engine Light / DTCs: Triggers P0135, P0141, P0133, or catalyst code P0420.
• Rough Idle & Hesitation: Sluggish upstream voltage feedback causes erratic fuel trims and tailpipe soot.
• Poor Fuel Economy: Rich open-loop operation drops MPG, overheats the converter, and fails emissions.

The Direct-Fit Heated Zirconia Oxygen Sensor Solution

This matched set pairs an upstream air-fuel sensor and downstream monitor built to match 234-5150, 234-4545, and 68087364AA OEM specifications. Laser-welded stainless steel bodies resist exhaust corrosion and thermal fatigue, while porous ceramic shields protect the element from moisture and carbon fouling. Factory-pinned weatherproof connectors and exact OEM thread geometry allow direct plug-and-play installation without cutting or wire splicing.

What's Included

• 1 Upstream Oxygen Sensor
• 1 Downstream Oxygen Sensor

Technical Specifications

Compatibility

• 2014-2020 Jeep Cherokee 2.4L (2-Sensor Configuration)

Frequently Asked Questions & Fitment Warnings

Does this fit the KL Cherokee?

Yes. Fits the 2014-2020 Jeep Cherokee with the 2.4L Tigershark (ED6) engine. Excludes 3.2L V6 and 2.0L Turbo models; confirm engine before ordering.

Will this fix P0135, P0141, and fuel trim codes?

Yes, if sensors have failed. Replacing both 234-5150 and 234-4545 restores heater resistance and closed-loop switching after verifying no exhaust leaks exist.

Are wire splices or adapters required for installation?

No. Both sensors feature OEM-length harnesses and factory connectors, threading directly into stock exhaust bungs.

The Jeep Heavy-Duty Standard

Built for daily thermal cycles and trail durability, these sensors keep your KL Cherokee running in clean closed-loop combustion and CEL-free compliance.