Possible causes
– Failed HO2S
– Ignition problem
– Fuel injection problem
– Engine mechanical condition
– Ignition problem
– Fuel injection problem
– Engine mechanical condition
Tech notes
There is a factory service bulletin for the following Saturn models:
2000-2008 Saturn Models
2000-2008 Saturn Factory Service Bulletin OBDII Code P1174
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1174 SATURN Description
The Engine Control Module (ECM) performs a fuel trim cylinder balance utilizing the HO2S, when the calculated accumulated voltage exceeds a predetermined level this code is set