I have service engine soon light, CarMD diagnostic tool shows OBD P0130 & P0171. They have been on and off for about eight months now. Every 30-40 miles the SES disapears then shows up again after 30-40 miles. The car passed California smog test while the SES was off. The car fuel consumption is not that impacted.
Should I go ahead and fix it or just leave it? Thanks