Upstream Downstream O2 Oxygen Sensor for Toyota 03 06 Camry RAV4 2.4L L4 2 Pcs

Product Overview

This O2 Oxygen Sensor set includes both upstream and downstream O2 sensors to provide accurate air-fuel ratio data to the ECU for 2003-2006 Toyota Camry and RAV4 2.4L engines. The sensors monitor exhaust oxygen levels, enabling proper fuel trim and reducing emissions. These O2 sensors restore factory performance and are engineered for Toyota owners who need a reliable plug-in replacement.

Key Features & Performance

• Complete upstream and downstream sensor pair for full exhaust monitoring
• Fast-response zirconia ceramic sensing element delivers precise voltage output
• Pre-wired OEM-style connectors enable simple plug-in installation without cutting or splicing
• Prevents false check engine lights caused by slow sensor switching or signal degradation
• Corrosion-resistant stainless steel shell withstands extreme exhaust temperatures

Fitment & Compatibility

• 2003-2006 Toyota Camry with 2.4L L4 engine
• 2003-2006 Toyota RAV4 with 2.4L L4 engine

Common Uses

• Restoring proper fuel trim after sensor wear or contamination
• Eliminating O2 sensor-related diagnostic trouble codes (P0130-P0167, P0420)
• Pre-catalyst and post-catalyst replacement during exhaust system repairs
• Routine maintenance to maintain fuel efficiency and emission compliance
• Ensuring accurate catalyst monitoring for emissions testing

Technical Specifications

• Sensor Type: Oxygen (O2)
• Sensor Position: Upstream (Pre-Cat) and Downstream (Post-Cat)
• Quantity: 2 Sensors
• Compatible Engine: 2.4L L4

Frequently Asked Questions

Q: Do I need to replace both upstream and downstream O2 sensors at the same time? A: Replacing both sensors at once restores balanced fuel control and prevents recurring oxygen sensor codes that can appear when only one is replaced.

Q: Will these sensors trigger a check engine light if installed correctly? A: When properly installed, these sensors produce accurate voltage signals that prevent false O2-related trouble codes; however, underlying engine issues can still trigger a light.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.