WHAT IS THE MOST LIKELY CAUSE OF A DTC 41?

ANONYMOUS

MEMBER
1988 FORD TAURUS
89,000 MILES

Monday, February 4th, 2013 AT 12:40 AM

1 Reply

CARADIODOC

MECHANIC
33,752 POSTS

41 oxygen sensor circuit indicates system always lean

Check for vacuum leaks, low fuel pressure, a leak in the exhaust system ahead of the oxygen sensor, restricted injector due to varnish buildup, and a leak in the fresh air tube between the mass air flow sensor and throttle body.