P1177 – O2 Correction Behind Catalyst B1 Limit Attained

P1177 Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P1177 Possible Causes

Faulty O2 Sensor,Faulty Failed MAF Sensor,Vacuum leak on engine,Lean Air/Fuel ratio

P1177 Description

O2 Correction Behind Catalyst B1 Limit Attained is the generic description for the P1177 code, but the manufacturer may have a different description. Currently we have no further information abouth the P1177 OBDII code.