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P0175 - System Too Rich Bank 2

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?
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P0175 Comments |  Add Comment
Possible causes
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Faulty Mass Air Flow (MAF) sensor
What does this mean? What does this mean?
When is the code detected?
- Fuel injection system does not operate properly.
- The amount of mixture ratio compensation is too large. (The mixture ratio is too rich.)
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Excessive Fuel Consumption
P0175 Description

With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. The Engine Control Module (ECM) calculates the necessary compensation to correct the offset between the actual and the theoretical ratios.

In case the amount of the compensation value is extremely large (The actual mixture ratio is too lean.), the ECM judges the condition as the fuel injection system malfunction and light up the MIL (2 trip detection logic).

P0175 Information for specific makes
P0175 ACURA Fuel System Too Rich Bank 2
P0175 AUDI System Too Rich Bank 2
P0175 BMW Mixture Control 2 System Too Rich Bank 2
P0175 BUICK Fuel Trim System Rich Bank 2
P0175 CADILLAC Fuel Trim System Rich Bank 2
P0175 CHEVROLET Fuel Trim System Rich Bank 2
P0175 CHRYSLER Fuel System 2/1 Rich
P0175 DODGE Fuel System 2/1 Rich
P0175 FORD System Too Rich Bank 2
P0175 GMC Fuel Trim System Rich Bank 2
P0175 HONDA Fuel System Too Rich Bank 2
P0175 HYUNDAI System Too Rich Bank 2
P0175 INFINITI Fuel Injection System Too Rich Bank 2
P0175 JEEP Fuel System 2/1 Rich
P0175 KIA Bank 2 System Too Rich
P0175 LEXUS System Too Rich Bank 2
P0175 MAZDA Rich Air/Fuel Ratio Bank 2
P0175 MERCEDES-BENZ System Too Rich Bank 2
P0175 MITSUBISHI System Too Rich Cylinders 2-3
P0175 NISSAN Fuel Injection System Too Rich Bank 2
P0175 PONTIAC Fuel Trim System Rich Bank 2
P0175 SATURN Fuel Trim System Rich Bank 2
P0175 SCION System Too Rich Bank 2
P0175 SUBARU System Too Rich Bank 2
P0175 TOYOTA System Too Rich Bank 2
P0175 VOLKSWAGEN System Too Rich Bank 2
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Repair Importance Level: 3
1=Low 2=Medium 3=High What does this mean?
Repair Difficulty Level: 3
1=Easy 2=Moderate 3=Hard What does this mean?
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