Hello,
I've been receiving a P2097 code for downstream O2. I've made the following changes since receiving this code:
1. Replaced both up and downstream O2 sensors
2. Replaced air filter
3. Replaced spark plugs
4. Replaced MAF sensor
5. Replaced MAP sensor
6. Replaced ICV valve
7. Ran cataclean through fuel system
8. Cleaned throttle body
9. Performed idle reset
Even after making all these replacements, the code is still present and the engine surges/pulses. Any suggestions on what to try next? Faulty catalytic converter? Exhaust leak somewhere? Someone on another forum even mentioned the knock sensor?
If needed, I can post ODB readings.
Thanks!
