Walker 250-25156 oxygen sensor for the 2019-2026 Volkswagen Jetta 4-cylinder 2.0L and other vehicles measures the oxygen in the exhaust to track the air-fuel ratio. This Walker Products oxygen sensor is made for its specific application and its upstream position.
- Monitors exhaust gases and reduces pollutants
- Electrodes with a gas-permeable platinum layer
- Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust
- Measures oxygen levels to fine-tune the air-fuel mixture and support fuel economy
Quick facts
- Part: Walker 250-25156 oxygen sensor
- Fits: 2019-2026 Volkswagen Jetta 4-cylinder 2.0L and other vehicles
- Position: Upstream
- Condition: New
A failing sensor can show up as rough running, higher fuel use or a lit malfunction indicator light. Before you replace the sensor, inspect its wiring harness and connector for physical damage and have any stored fault codes read, so those causes are ruled out first.
Fits
The 2019-2026 Volkswagen Jetta 4-cylinder 2.0L, the 2019-2025 Audi Q3 4-cylinder 2.0L and the 2019-2023 Jeep Renegade 4-cylinder 1.3L are among the vehicles this upstream sensor fits, and each takes one. If your car is not named here, look up your year, make and engine in the "Vehicles it fits" section, where the other vehicles are listed.
Specifications
Fit and size
- Position: Upstream
- Quantity per vehicle: 1
- Thread size: M18 - 1.5
Build and materials
- Sensor type: Wide-band
- Electrodes: gas-permeable platinum layer
- Condition: New
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is this the right oxygen sensor for a 2019-2026 VW Jetta 4-cylinder 2.0L?
Yes. The 2019-2026 Volkswagen Jetta 4-cylinder 2.0L is covered by this Walker 250-25156 sensor, which goes in the upstream position, one per vehicle.
Is this an oxygen sensor for the 2019-2025 Audi Q3 4-cylinder 2.0L?
Yes. Walker 250-25156 is listed for the 2019-2025 Audi Q3 4-cylinder 2.0L as the upstream sensor, and the car takes one.
Is this Walker O2 sensor an upstream or downstream sensor?
Upstream. This wide-band sensor is made for the upstream position, not the downstream one.
What does the coating on this oxygen sensor do?
The electrodes carry a gas-permeable platinum layer. The coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust.
Can a failing oxygen sensor turn on the check engine light?
Yes, a failing sensor can light the malfunction indicator light, and it can also bring rough running or higher fuel use. A shop can read the stored fault codes.
