P0175 Fault Code

P0175 OBD-II Trouble Code Short Description

System Too Rich (Bank 2)

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What does trouble code P0175 mean?

The P0175 fault code indicates that the engine control module (ECM) has detected a rich fuel mixture on bank 2 of the engine. This means that there is too much fuel or insufficient air in the combustion chamber, leading to inefficient engine performance.

Symptoms

What are the symptoms of the P0175 code?

  • Decreased fuel economy
  • Rough idling or engine misfires
  • Strong fuel smell from the exhaust
  • Poor acceleration and overall performance
  • Check Engine Light (CEL) illuminated on the dashboard

Causes

What causes the P0175 code?

  • Faulty fuel injectors (leaking or clogged)
  • Dirty or faulty mass air flow (MAF) sensor
  • Malfunctioning oxygen sensor
  • Shorted or damaged wiring to the fuel injectors or sensors
  • Vacuum leaks allowing excess air into the intake
  • Fuel pressure regulator issues leading to high fuel pressure

Possible Solutions

How to fix P0175?

  • Inspect and clean or replace the MAF sensor
  • Check fuel injectors for proper function and replace if necessary
  • Test and replace faulty oxygen sensors
  • Repair any vacuum leaks found in the intake system
  • Check the fuel pressure regulator and replace if it is outside specifications
  • Clear the fault code and verify that the problem does not return
P0175 System Too Rich (Bank 2)