ive been trying to hunt this code for a month before i finally got a smoke machine and found the leak in my intake gaskets. visually, it just "seeps" not billows smoke. already ordered oem gaskets but they might be here too late for me to work on it soon. the weekends are the only free time i get to work on the car and it worries me that its not running right. engine sounds fine, no pinging or rough idle just worse gas mileage. check engine light is off (chatgpt tells me the ecu has been able to compensate with more gas) but i verified the lean condition with a scan tool 19.5-30% LTFT short term is normal range, only lean under idle during normal driving it doesnt run lean. cooling system and ignition are in good shape.
thanks!
thanks!
