Possible causes
– Faulty Intake Air Temperature (IAT) sensor
– Dirty air filter
– Intake Air Temperature (IAT) sensor harness is open or shorted
– Intake Air Temperature (IAT) sensor circuit poor electrical connection
– Dirty air filter
– Intake Air Temperature (IAT) sensor harness is open or shorted
– Intake Air Temperature (IAT) sensor circuit poor electrical connection
When is the code detected?
An excessively low voltage from the sensor is sent to ECM.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P0112 AUDI Description
The Intake Air Temperature (IAT) sensor is built into mass air flow sensor or in some vehicles mounted to the air filter duct housing. The sensor detects intake air temperature and transmits a signal to the Engine Control Module (ECM).The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical resistance of the thermistor decreases in response to the temperature rise. The Intake Air Temperature signal is used as an input for various systems in the vehicle.
AUDI Technical Service Bulletins for P0112 code
2003 AUDI A8 ENGINE AND ENGINE COOLING:ENGINE
2003 AUDI RS6 ENGINE AND ENGINE COOLING:ENGINE
2004 AUDI A8 ENGINE AND ENGINE COOLING:ENGINE
2004 AUDI ALLROAD ENGINE AND ENGINE COOLING:ENGINE
2004 AUDI RS6 ENGINE AND ENGINE COOLING:ENGINE
2004 AUDI S4 ENGINE AND ENGINE COOLING:ENGINE
2005 AUDI A8 ENGINE AND ENGINE COOLING:ENGINE
2005 AUDI S4 ENGINE AND ENGINE COOLING:ENGINE
2005 AUDI S4 CABRIOLET ENGINE AND ENGINE COOLING:ENGINE
2006 AUDI A8 ENGINE AND ENGINE COOLING:ENGINE