O2 Oxygen Sensor Upstream Downstream for Jeep Compass (2011-2017) 2.4L

Direct-Fit O2 Oxygen Sensor Kit for 2011-2017 Jeep Compass (MK49)

What it Does: This upstream and downstream oxygen sensor kit monitors exhaust oxygen on the MK49 Jeep Compass ED3 2.4L to regulate fuel trim and verify catalyst efficiency.

The Stock Jeep Compass Sensor Failure

Factory oxygen sensors on the MK49 chassis with the ED3 2.4L engine endure constant thermal cycling, soot, and moisture. Over time, internal zirconia elements suffer thermal shock and oil-ash poisoning, slowing voltage switching. Internal heater circuits also fatigue from vibration and heat soak, causing open-circuit faults. Slow sensor feedback forces the PCM into inaccurate closed-loop fuel trim operation.

Common Symptoms of a Failing OEM Oxygen Sensor

• Heater & Circuit DTCs: Open heaters or slow switching trigger P0133, P0135, and P0141 codes.
• Rich Fuel Trim: Sluggish lambda voltage forces over-fueling, fouling spark plugs and lowering MPG.
• Emissions Failure: Lazy downstream readings trigger P0420 catalyst codes and failed inspections.

The Direct-Fit Dual Oxygen Sensor Solution

Replacing both sensors together restores crisp pre-cat lambda switching and post-cat monitoring on Federal MK49 platforms. Each direct-fit O2 sensor features a corrosion-resistant stainless steel housing, high-temperature ceramic element, and factory-calibrated heater resistance. Pre-terminated OEM-style connectors plug directly into factory wiring without cutting or splicing. Restoring synchronized feedback stabilizes fuel trim and satisfies 234-4547 replacement intervals.

What's Included

• 1x Upstream Oxygen Sensor
• 1x Downstream Oxygen Sensor

Technical Specifications

Compatibility

• 2011-2017 Jeep Compass 2.4L (Federal 2-Sensor Package Only; Excludes California 4-Sensor & 2.0L)

Frequently Asked Questions & Fitment Warnings

Does this fit the MK49 Compass?

Yes. Fits 2011-2017 Jeep Compass ED3 2.4L models. Federal 2-sensor package only; excludes California 4-sensor packages and 2.0L engines.

Will this clear P0135, P0141, or P0420 codes?

Yes, if sensor-related. New sensors fix P0135/P0141 heater faults and P0133 lag, though failed catalysts still trigger P0420.

Is wiring modification required for installation?

No. Both direct-fit sensors include OEM-style connectors; confirm your 2.4L Federal 2-sensor layout before ordering.

The Jeep Heavy-Duty Standard

Built for the thermal cycling and underbody exposure of MK49 daily driving, this matched sensor kit maintains precise closed-loop fuel control. Reliable lambda feedback protects catalyst longevity and keeps your 2.4L running cleanly.