P0175 - Engine Too Rich (Bank 2)

This diagnostic code informs that an Oxygen Sensor located in bank 2 has detected a very high condition or there is an oxygen insufficiency in the exhaust gases. In the 6, 8 and 10 cylinder engines, bank 2 corresponds to the side of the engine that has cylinder number 1. It should be mentioned that, this DTC code is very similar to P0172, and it is very likely that your vehicle shows both codes to the Same time. In general terms, the gasoline mixture sent by the PCM computer is very high.

• Check Engine dashboard service light is on.
• Problems arise when trying to start the engine
• The vehicle consumes a lot of gasoline more than normal.
• Strong smell of gasoline

A code P0175 can have one or more of the following problems:

• The injection system is showing faults.
• There is a fuel pressure or there are delivery problems.
• MAF (Mass Air Flow) sensor is dirty or defective.
• Front Oxygen Sensor is defective.
• Damaged fuel injectors or lack of maintenance.

To fix the DTC code P0175 you can check the following components:

• Inspect all vacuum hoses and the PCV valve. If they have damage, you must repair or change.
• Check that the fuel injectors are not dirty, have a leak or voltage problems /
• Check the conditions of the MAF sensor and clean the sensor if necessary, and when reinstalling it, make sure it is completely dry, otherwise it could be damaged.
• Check the fuel lines, checking that there is no leak or hole that causes gasoline to leak.
• Check the fuel pump and make sure it has enough pressure.
• Check that there is no escape leak before the first SO2 Oxygen Sensor.
• Test the coolant temperature sensor. Remember that if you are not making correct readings you may throw this DTC code. For example, if reading is giving is colder than real will tell the computer to inject more gasoline.