O2 Oxygen Sensor Upstream Downstream for Ford Escape (2013-2016) 1.6L

Direct-Fit Upstream & Downstream O2 Oxygen Sensor Kit for 2013-2016 Ford Escape (C520)

What it Does: This matched upstream and downstream oxygen sensor kit restores closed-loop air-fuel monitoring and catalyst tracking on 2013-2016 Ford Escape C520 models with the 1.6L EcoBoost.

The Stock Ford Escape O2 Sensor Failure

On the C520 chassis equipped with the turbocharged 1.6L EcoBoost, extreme exhaust heat and thermal cycling degrade the factory ceramic sensing element and internal heater circuit. Carbon soot and moisture intrusion cause sluggish voltage switching or open heater resistance, triggering P0135, P0141, and P0171 codes. Once the upstream sensor skews, the PCM loses accurate fuel trim control.

Common Symptoms of a Failing OEM O2 Sensor

• Check Engine Light & Heater DTCs: Triggers P0135, P0141, or P0131 from internal heater burnout.
• Erratic Fuel Trims: Skewed AFR feedback causes P0171/P0172, surging under boost, and rough idle.
• Reduced Fuel Economy: Forces rich open-loop fueling, dropping MPG and failing emissions readiness.

The Direct-Fit Heated Zirconia Solution

Replacing both sensors as a matched set restores synchronized exhaust feedback before and after the catalytic converter. Built with laser-welded stainless steel housings, protective shrouds, and fast-light-off heaters, these sensors resist thermal shock and carbon fouling. Factory-keyed connectors and OEM-length harnesses directly replace 234-5068 and 234-4577 without wire splicing. Pre-coated threads ensure clean installation into factory exhaust bungs.

What's Included

• 1 Upstream Oxygen Sensor
• 1 Downstream Oxygen Sensor

Technical Specifications

Compatibility

• 2013-2016 Ford Escape 1.6L

Frequently Asked Questions & Fitment Warnings

Does this fit the C520 Escape?

Yes. Direct fit for the 2013-2016 Ford Escape with the 1.6L EcoBoost engine. Excludes 2.0L and 2.5L engines; confirm engine size before ordering.

Will this clear P0135, P0141, or P0171 codes?

Yes, when caused by faulty sensors. Replacing 234-5068 and 234-4577 restores heater continuity and closed-loop fuel control after clearing DTCs.

Is wire splicing required for installation?

No. Both sensors include factory-style locking connectors for plug-and-play installation into OEM harnesses.

The Ford Precision Standard

Engineered for fast voltage response under turbocharged exhaust heat, this sensor kit keeps your C520 Escape running at peak stoichiometric efficiency and CEL-free.