O2 Oxygen Sensor Upstream Downstream for Dodge Grand Caravan (2004-2007) 3.3L

Direct-Fit Upstream & Downstream O2 Oxygen Sensor Kit for 2004-2007 Dodge Grand Caravan (RS)

What it Does: This matched upstream and downstream oxygen sensor kit restores closed-loop air-fuel ratio feedback and catalyst efficiency monitoring on the 2004-2007 Dodge Grand Caravan RS equipped with the 3.3L EGA V6 engine.

The Stock Dodge Grand Caravan O2 Sensor Failure Mechanism

On the RS chassis with the 3.3L EGA V6, factory oxygen sensors endure severe thermal cycling, exhaust condensation, and oil or coolant contamination over high mileage. This exposure fouls the porous platinum electrodes and fractures the internal ceramic zirconia element, slowing switching voltage response across the stoichiometric threshold. As the internal heater element degrades from vibration and heat soak, the PCM logs fault codes like P0133, P0135, and P0141, forcing open-loop fuel enrichment.

Common Symptoms of a Failing OEM Oxygen Sensor

• Check Engine Light / O2 DTCs: Triggers codes such as P0133 (slow upstream response), P0135/P0141 (heater circuit failure), P0171 (lean fuel trim skew), or false P0420 catalyst efficiency alerts.
• Sluggish Closed-Loop Fueling: Delayed millivolt switching between 0.1V and 0.9V causes surging at cruise, rough idle, and hesitation under light throttle transitions.
• Excessive Fuel Consumption & Failed Emissions: Defaulting to open-loop enrichment spikes hydrocarbon and CO tailpipe emissions, causing failed state inspections and accelerated catalytic converter thermal damage.

The Direct-Fit Heated Zirconia Oxygen Sensor Solution

Replacing both upstream and downstream units as a matched pair restores synchronized exhaust gas telemetry to the RS powertrain control module. Each direct-fit sensor features a corrosion-resistant stainless steel housing, precision laser-welded protective shield, and fast-light-off ceramic heater core for rapid closed-loop entry. Factory-length wiring harnesses with OEM-style weather-sealed connectors ensure plug-and-play installation into the existing 3.3L EGA V6 exhaust bungs without splicing or wire-chafing risks.

What's Included

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

Technical Specifications

Compatibility

• 2004 Dodge Grand Caravan 3.3L V6 (Upstream & Downstream)
• 2005 Dodge Grand Caravan 3.3L V6 (Upstream & Downstream)
• 2006 Dodge Grand Caravan 3.3L V6 (Upstream & Downstream)
• 2007 Dodge Grand Caravan 3.3L V6 (Upstream & Downstream)

Frequently Asked Questions & Fitment Warnings

Does this fit the RS Grand Caravan?

Yes. This is a direct fit for the 2004-2007 Dodge Grand Caravan equipped with the 3.3L EGA V6 engine, which uses 2 sensors (1 upstream and 1 downstream). Does not fit 3.8L Grand Caravan models, Dodge Caravan 3.3L models, or 2008-2020 Grand Caravan models; confirm engine displacement before ordering.

Will this clear P0133, P0135, P0141, or O2-related P0420 codes?

Yes, when triggered by worn sensors. Replacing both the upstream air-fuel feedback sensor and downstream catalyst monitor resolves heater circuit faults (P0135/P0141) and sluggish voltage switching (P0133); inspect the catalytic converter if P0420 returns after installation.

Are the connectors plug-and-play or is wiring splicing required?

No splicing is required. Both direct-fit sensors include factory-style electrical connectors and OEM harness lengths ready to thread into the existing 3.3L EGA V6 exhaust bungs after cleaning thread corrosion with a thread chaser.

The Dodge Emissions & ECU Precision Standard

Maintaining accurate upstream and downstream oxygen feedback keeps your RS minivan running at optimal stoichiometric efficiency and prevents premature catalytic converter fouling. Engineered for factory-spec voltage switching and thermal durability, this matched two-sensor kit delivers reliable, CEL-free daily operation.