P0175Mercedes-benz E-classYears: 1996 - 2026
System Too Rich (Bank 2)
Reviewed by ASE Certified Technician
What does this mean?
Code P0175 indicates the fuel system on Bank 2 is running too rich, with excessive fuel relative to air.
Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Mercedes-benz E-class models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.
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Common Causes
Dirty or contaminated MAF sensor
Clogged or faulty fuel injector
Faulty fuel pressure regulator
Faulty oxygen (O2) sensor
Worn or fouled spark plugs
Symptoms to Watch For
- Check Engine Light is illuminated
- Rough or unstable idle
- Black smoke from exhaust (running rich)
- Decreased fuel economy
- Rotten egg smell (sulfur) from exhaust