O2 Oxygen Sensor Upstream Downstream for Toyota Camry (1997-1999) 2.2L

Direct-Fit Upstream & Downstream O2 Oxygen Sensor Kit for 1997-1999 Toyota Camry (XV20)

What it Does: This matched O2 sensor kit measures exhaust oxygen before and after the catalyst on the XV20 Toyota Camry 5S-FE 2.2L, delivering real-time ECM feedback for fuel trim control.

The Stock Toyota Camry Sensor Failure

Factory oxygen sensors on the XV20 Camry with the 5S-FE 2.2L endure severe exhaust thermal cycling and carbon fouling over high mileage. Internal zirconia ceramic elements eventually crack from thermal shock or suffer sulfur poisoning, slowing voltage switching rates. Simultaneously, internal heater circuits open-circuit from vibration, preventing rapid light-off and triggering persistent OBD-II fault codes including P0135, P0141, and P0133.

Common Symptoms of a Failing OEM O2 Sensor

• Check Engine Light & DTCs: Triggers P0135, P0141, or P0133 from open heater circuits or lazy sensor switching.
• Rich Fuel Mixture: Slow upstream feedback forces open-loop enrichment, fouling spark plugs and producing heavy tailpipe soot.
• Failed Emissions & Low MPG: Uncorrected fuel trims increase fuel consumption and fail OBD-II readiness monitors.

The Direct-Fit Zirconia Sensor Solution

This matched pair replaces upstream and downstream positions with factory-calibrated zirconia ceramic elements housed in corrosion-resistant stainless steel shells. Laser-welded seals block moisture intrusion into the reference air chamber under harsh underbody conditions. Precision 18mm threads and OEM-style 4-wire connectors directly replace 234-4626 and 8946506010, delivering reliable closed-loop signal output and plug-and-play installation without cutting or splicing factory wiring harnesses.

What's Included

• 1 Upstream Oxygen Sensor
• 1 Downstream Oxygen Sensor

Technical Specifications

Compatibility

• 1997-1999 Toyota Camry 2.2L (Upstream & Downstream)

Frequently Asked Questions & Fitment Warnings

Does this fit the XV20 Camry?

Yes. Fits the 1997-1999 Toyota Camry with the 5S-FE 2.2L engine. Excludes 3.0L V6 models; confirm engine before ordering.

Will this clear P0135 or P0141 codes?

Yes, if caused by failed sensors matching 234-4626 or 8946506010. Check heater fuses before clearing codes.

Is wiring modification required for installation?

No. Includes OEM connectors for plug-and-play installation with a 22mm sensor socket.

The Toyota Precision Standard

Designed to restore factory closed-loop fuel control on the XV20 Camry, this matched kit ensures accurate ECM feedback and CEL-free emissions compliance.