O2 Oxygen Sensor Upstream Downstream for Toyota Corolla (2009-2010) 1.8L

Direct-Fit O2 Oxygen Sensor Kit for 2009-2010 Toyota Corolla (E140)

What it Does: This matched upstream and downstream oxygen sensor kit monitors exhaust gases on the E140 2009-2010 Toyota Corolla 2ZR-FE 1.8L to regulate fuel trims and catalyst efficiency.

The Stock Toyota Corolla Sensor Degradation

On high-mileage E140 models with the 2ZR-FE 1.8L engine, factory oxygen sensors suffer thermal cycling fatigue, silicon contamination, and carbon fouling on the zirconia sensing tip. As internal heater resistance climbs, the upstream air-fuel ratio sensor lags behind throttle transitions. This delayed feedback skews closed-loop fuel trims, commonly triggering P0136, P0138, P2195, or lean P0171 diagnostic trouble codes.

Common Symptoms of a Failing OEM Oxygen Sensor

• Check Engine Light / DTCs: Faulty heater circuits or slow response trigger P0136, P0138, P2195, or P0420 codes.
• Rich Exhaust & Fuel Loss: Degraded AFR feedback forces rich open-loop fueling, reducing MPG.
• Rough Idle & Failed Emissions: Delayed closed-loop correction causes hesitation and high tailpipe hydrocarbons.

The Direct-Fit Zirconia Sensor Solution

Replacing both exhaust positions as a matched set restores accurate upstream-to-downstream signal integrity. Built with stainless steel housings, protective PTFE breather membranes, and OEM-calibrated planar ceramic elements, these sensors resist thermal shock and moisture ingress. Each unit features factory-length insulated leads, heat-shielded sleeving, and keyed OEM-style connectors matching SU-000112 specifications for direct plug-and-play installation without splicing.

What's Included

• 1 Upstream Air Fuel Ratio Sensor
• 1 Downstream Oxygen Sensor

Technical Specifications

Compatibility

• 2009 Toyota Corolla 1.8L (2ZR-FE / E140)
• 2010 Toyota Corolla 1.8L (2ZR-FE / E140)

Frequently Asked Questions & Fitment Warnings

Does this fit the E140 Corolla?

Yes. Direct fit for 2009-2010 Toyota Corolla models with the 2ZR-FE 1.8L engine. Excludes 2.4L 2AZ-FE XRS trims; confirm engine size before ordering.

Will this clear P0136, P0138, or P2195 codes?

Yes, if sensor-related. Installing matched sensors matching SU-000112 restores voltage response and heater resistance, clearing P0136, P0138, and P2195 codes after reset.

Are factory connectors included for installation?

Yes. Both sensors feature pre-terminated OEM plugs for tool-free wiring using a standard 22mm O2 socket.

The Toyota Precision Standard

Engineered for factory ECM calibration, these matched sensors deliver reliable emissions compliance and consistent fuel economy on your E140, restoring CEL-free operation.