Nissan NV Bypass Valve Error

I also drive a Nissan NV (though not from 2018). Your problem sounds strangely familiar. I had a similar experience with the bypass valve error showing up along with engine overheating. Before you start replacing parts, did you check for any other unusual symptoms or recent maintenance work that might be connected? Specifically, any issues with power, unusual noises, or recent work on the exhaust system?

That's interesting! No recent work at all, however, the power feels like it's not all there, though it is very subtle. What was the final diagnosis for your van? Was the bypass valve actually faulty, or was it something else triggering the error?

In my case, the bypass valve error was a consequential issue, ultimately stemming from a different sensor failure. I suggest taking your van to a trusted workshop to pinpoint the root cause. Given your symptoms, it's likely a sensor failure or something related in the exhaust system. It's better to have it properly diagnosed instead of just replacing the bypass valve.

Alright, thanks for the tip! That's really helpful. I took your advice and brought it in to the shop. Turns out that you were right. It was indeed a consequential error from another issue! They sorted it out and no charge!