Cadillac SRX Second Generation Forum - 2010+ Discussion, P0121 P0221 and P0101 codes in Cadillac SRX Forums; P0121 P0221 and P0101 codes
Got all these Codes, I have had the MAF code before so I am thinking ...
P0121 P0221 and P0101 codes
Got all these Codes, I have had the MAF code before so I am thinking its a bad MAF just wondering if the MAF would throw those codes as well or its something more in depth I should look at with the Throttle position Sensor
When you get it fixed throw the K & N in the trash and use a paper filter for better filtering. Paper filters are good for 30000-50000 miles and will NOT reduce fuel economy since the engine management system will always keep the A/F ratio at 14.7. If you drive in high dusty conditions you may want to replace filter earlier.
Was never looking for fuel economy, more power was always my goal. Even though it maybe hard to believe, the difference with the K&N was massive. Could hear the Turbo Spool up and a noticeable amount of power, but probably also the reason why I got the Codes. Never had an issue on any other car !