Possible causes
– Faulty HO2 Sensor Bank 1
– HO2 Sensor Bank 1 harness is open or shorted
– HO2 Sensor Bank 1 circuit poor electrical connection
– HO2 Sensor Bank 1 harness is open or shorted
– HO2 Sensor Bank 1 circuit poor electrical connection
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
AUDI Technical Service Bulletins for P1111 code
2002 AUDI A4 ENGINE AND ENGINE COOLING:ENGINE
2002 AUDI S4 ENGINE AND ENGINE COOLING:ENGINE
2002 AUDI TT ENGINE AND ENGINE COOLING:ENGINE
2003 AUDI A4 ENGINE AND ENGINE COOLING:ENGINE
2003 AUDI S4 ENGINE AND ENGINE COOLING:ENGINE
2003 AUDI TT ENGINE AND ENGINE COOLING:ENGINE