How many oxygen sensors does a Dodge Journey have?
The number of oxygen sensors depends on the engine installed. The 2.4-liter inline-4 generally uses two sensors, while the 3.6-liter V6 generally uses four sensors.
In practice, Dodge Journeys came with two main engine options during its production run: a 2.4L inline-4 and a 3.6L V6. The sensor count aligns with how many catalytic converters the exhaust system has and how many exhaust banks the engine uses. This article breaks down the typical counts for those configurations and points to where the sensors are usually located.
Engine variants and sensor counts
Below are the two most common engine configurations for the Journey and their typical O2 sensor counts.
2.4L inline-4 (2.4L I4)
Most Dodge Journeys equipped with the 2.4L inline-4 use two oxygen sensors—one upstream (before the catalytic converter) and one downstream (after the catalytic converter).
- Pre-cat sensor (Upstream)
- Post-cat sensor (Downstream)
In summary for the 2.4L engine, you should expect two O2 sensors in regular configurations.
3.6L Pentastar V6 (3.6L)
Journeys with the 3.6L V6 typically employ four oxygen sensors—two upstream sensors (one on each exhaust bank) and two downstream sensors (one on each bank after its catalytic converter).
- Bank 1 Upstream
- Bank 1 Downstream
- Bank 2 Upstream
- Bank 2 Downstream
In summary for the 3.6L engine, you should expect four O2 sensors in standard configurations.
Locating your oxygen sensors
Oxygen sensors are located along the exhaust pathway, typically mounted in pairs for multi-bank engines. Upstream sensors sit before the catalytic converter, while downstream sensors sit after. The exact placement can vary by model year and exhaust layout, so it’s wise to consult your owner’s manual or a service manual for precise locations on your VIN.
General tips to identify them on the vehicle:
- Follow the exhaust manifold from the engine toward the tailpipes; sensors will be threaded into the exhaust pipe at or near the cat or cats.
- Look for electrical connectors with heat-resistant wiring running to metal probes inserted into the exhaust stream.
If you’re unsure of your engine type or the sensor count, you can verify by checking the window sticker or service records for the engine size, or by inspecting the under-hood engine badge and the exhaust layout. A dealership or qualified mechanic can confirm the exact sensor count for your specific vehicle year and configuration.
Summary
For the Dodge Journey, sensor counts hinge on the engine: 2 sensors for the 2.4L inline-4 and 4 sensors for the 3.6L V6. Always confirm with your VIN and model year, as variations in exhaust layout or regional specifications can alter the setup. Knowing the correct count helps with diagnostics, replacement parts, and service planning.
