Why it matters: O2 sensors feed critical data to your ECU, helping maintain the ideal air-fuel ratio for performance, efficiency, and emissions control. Reading the signals: Healthy upstream sensors ...

What are lean codes: P0171 and P0174 indicate a lean fuel mixture on Bank 1 and Bank 2, often detected by upstream oxygen sensors. Why they matter: Lean conditions can cause misfires, hesitation, ...

We tested our own computers to see if the model was present.

I tested the Eight Sleep Pod 5, Garmin Venu 4 smartwatch and the Oura Ring 4 Ceramic for 90 days to determine if the trackers ...