Tag: how to clean nox sensor

Can You Clean a NOx Sensor? (When It Works vs When to Replace)

"Can I just clean the NOx sensor instead of replacing it?" It's the first question van owners ask when they're quoted £300–£800 for a new NOx sensor after getting a P2201 or P2BAD fault code. The short answer: sometimes, but not often. Unlike oxygen sensors (lambda sensors) which can often…