Possible Cause

DTC P0172

• A/F Sensor 1 (bank 1)
• Fuel injector
• Exhaust gas leaks
• Incorrect fuel pressure
• Mass Air Flow Sensor

DTC P0175

• A/F Sensor 1 (bank 2)
• Fuel injector
• Exhaust gas leaks
• Incorrect fuel pressure
• Mass Air Flow Sensor