sum_yun_gai

I ran the code scanner again tonight and got a code P0330 (Bank 2 knock sensor). This sounds right on target with what I am seeing, so I'm going to do as you suggest and re-clean the MAF and run some fuel injector cleaner through. Thanks a bunch for the advice!

Thanks! I changed the front sensor and the 'check engine' light went off for 30 miles, came back on for 50 miles, and has been off again for about the last 50 miles. Here's hoping it's fixed!

Couple of questions. Is Bank2 Sensor1 before or after the catalyst? The parts stores don't seem to know what banks and sensor numbers are. Also, one site states that the pre-cat sensors are required in pairs, which means that $200 sensor is now going to cost $400, for a pair. Is this true? Thanks for any help! Seth

Thank you all! I cleaned the MAF, and got a short-term improvement in performance, I am going to try to find the bank2 sensor1 O2 sensor today. I'll let y'all know what happens! Thanks, Seth

No suggestions? Comments? At this point anything would be helpful. Thanks!

My 1999 Lexus RX300 is showing the following 3 codes P0330 KS 2 Circuit Malfunction (knock sensor?) P1150 Air/Fuel Ratio Sensor Circuit Range/Performance Malfunction (Bank 2 Sensor 1) P1153 Air/Fuel Ratio Sensor Circuit Response Malfunction (Bank 2 Sensor 1) P1155 Air/Fuel Ratio Sensor Heater Circuit Malfunction (Bank 1 Sensor 1) Any clues as to how to approach this? I'd really hate to spend nearly a thousand dollars replacing all these sensors if there's only a minor problem, or if one of the bad sensors malfunctioning is causing the others to throw codes.. Has anyone seen this before? Any help is greatly appreciated! Thanks, Seth