The P1174 code is a diagnostic trouble code (DTC) that indicates a problem with the oxygen sensor in your Pontiac G6. This code specifically indicates that the oxygen sensor in Bank 2, Sensor 1 is not functioning properly.
The oxygen sensor is responsible for measuring the amount of oxygen in the exhaust gas from your engine. This information is used by the engine control module (ECM) to adjust the air/fuel mixture to ensure that the engine is running efficiently.
When the oxygen sensor fails, the ECM is unable to accurately adjust the air/fuel mixture, which can lead to a variety of problems, including:
* Increased fuel consumption
* Decreased engine performance
* Rough idling
* Check engine light illumination
If you see the P1174 code on your Pontiac G6, it is important to have the problem diagnosed and repaired as soon as possible. Driving with a faulty oxygen sensor can damage your engine and lead to expensive repairs.
The most common cause of the P1174 code is a faulty oxygen sensor. However, other problems, such as a vacuum leak or a faulty fuel injector, can also cause this code to be set.
To diagnose the problem, a mechanic will typically start by inspecting the oxygen sensor and its wiring. If the oxygen sensor is damaged or the wiring is loose, the mechanic will replace the oxygen sensor.
If the oxygen sensor and wiring are in good condition, the mechanic will then check for a vacuum leak or a faulty fuel injector. If a vacuum leak or faulty fuel injector is found, the mechanic will repair the problem.
Once the problem has been repaired, the mechanic will clear the P1174 code from the ECM.
