O2 Oxygen Sensor Upstream Downstream for Honda CR-V (2007-2011) 2.4L

Direct-Fit Upstream & Downstream O2 Oxygen Sensor Kit for 2007-2011 Honda CR-V (RE3/RE4)

What it Does: This matched upstream and downstream oxygen sensor kit restores closed-loop air-fuel monitoring and catalyst tracking on 2007-2011 Honda CR-V (RE3/RE4) K24Z 2.4L engines.

The Stock Honda CR-V Oxygen Sensor Failure

On the RE3/RE4 platform equipped with the K24Z1 / K24Z6 2.4L i-VTEC engine, factory oxygen sensors endure extreme thermal cycling and exhaust soot contamination. Over time, internal zirconia sensing elements suffer carbon fouling and thermal shock, while internal heater circuits degrade from high-amperage heat soak. This slows voltage switching response, skewing ECU short-term and long-term fuel trims and triggering persistent fault codes like P0134, P0135, P0141, and P2A00.

Common Symptoms of a Failing OEM Oxygen Sensor

• Check Engine Light / DTCs: Triggers P0135, P0141 (heater circuit), or P2A00/P0134 from sluggish sensor voltage.
• Erratic Fuel Trims: Corrupted upstream feedback forces rich open-loop defaults, causing rough idle and exhaust soot.
• Fuel Economy Drop: Delayed closed-loop switching lowers MPG and fails OBD-II emissions readiness tests.

The Direct-Fit Matched O2 Sensor Solution

Replacing both sensors as a matched set ensures synchronized upstream fuel-trim feedback and downstream catalyst monitoring across the 2.4L exhaust stream. Each sensor utilizes a fast-acting planar zirconia element housed in a laser-welded stainless steel body with protective exhaust louvers to resist moisture shock and vibration. Equipped with factory-length heat-sleeved leads, anti-seize coated threads, and OEM-style weatherproof connectors, these sensors install directly into the factory exhaust bungs with zero splicing.

What's Included

• 1x Upstream Oxygen Sensor (Direct-Fit)
• 1x Downstream Oxygen Sensor (Direct-Fit)

Technical Specifications

Compatibility

• 2007-2011 Honda CR-V 2.4L (Confirm 2.4L engine before ordering)

Frequently Asked Questions & Fitment Warnings

Does this fit the RE3/RE4 CR-V?

Yes. Direct fit for 2007-2011 Honda CR-V K24Z1 / K24Z6 2.4L models. Excludes 2002-2006 (RD) and 2012+ (RM) generations; confirm 2.4L engine before ordering.

Will this clear P0135, P0141, or P2A00 codes?

Yes, when sensors fail. Replacing both units restores heater resistance and ECU voltage switching; inspect for exhaust leaks first.

Are connectors plug-and-play without wire splicing?

Yes. Both include OEM-keyed plugs; clean bung threads and torque to 33 lb-ft without contaminating the tip.

The Honda Precision Standard

Engineered for exact ECU fuel-trim accuracy and CEL-free emissions compliance on K24Z drivetrains. Delivers reliable closed-loop efficiency and clean throttle response.