P1143 2003 Nissan Altima Sedan -

Question

I've already replace the sensor but the ck engine light is still on.

Answer 1

Hi there,

Here is a list of possible causes for a heated O2 sensor code.

P1143 NISSAN - Heated Oxygen Sensor 1 Lean Shift Monitoring Bank 1

Read more: https://www.autocodes.com/p1143_nissan.html