Hi I have a 2017 Hyundia Sante Fe with 208950 km.  The car is paid off and recently came off warranty.  The cars engine has been making a rattling noise and a yellow flashing engine light came on.  Initially an engine code of P0420 and P0014 came up and the spark plugs were changed, bank 1 sensor 2 o2 sensor and cam position sensor and gas cap was changed.  Oli has been changed which made the engine light disappear for about 100 km but came back.  Now there is a code of P0340 "camshaft position sensor A circuit malfunction bank 1 or single sensor and P1326 - knock sensor detection system". The engine light has been flashing again and car is in safe mode.

What else may need to be fixed?  I have been provided a quote of 3K to 5K cad. To sell.  Would you fix or sell?  

Thank you for reading this email.

Regards,

Rasul Kassam