Code P0325 is a generic OBD 2 fault code for a knock sensor malfunction on cylinder bank one. Several problems can cause the ...

Karl is a Senior Editor at CarBuzz and first joined the company as a freelancer in 2019. After graduating as a copywriter and studying journalism, his early work life included stints in television ...

The knock sensor on your Toyota VVTi engine is basically a microphone that senses if detonation occurs in one of the cylinders. The detonation happens when the fuel-air mixture ignites before it’s ...

One of the common causes of lost power and performance in diesel-powered vehicles is a malfunctioning nitrogen oxides (NOx) sensor. These sensors monitor NOx levels in the vehicle’s exhaust. If they ...

Q I drive a 2005 Toyota 4Runner SR5 with 85,000 miles on it. Other than routine repairs, the vehicle has been trouble-free for all the years I’ve owned it. About two months ago, the check engine light ...

SAE Transactions, Vol. 114, Section 5: JOURNAL OF MATERIALS AND MANUFACTURING (2005), pp. 119-125 (7 pages) We have been developing the mixed-potential type NOx sensor which can detect the total-NOx ...

HOLLY, Mich, Oct. 02, 2025 (GLOBE NEWSWIRE) -- A diesel vehicle is built tough, but there are two small bits of technology that can bring it to its knees: NOx (nitrogen oxides) sensors. These sensors ...