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OBD II Fault Code P0171 :

Description of Fault code P0171

REAR BANK (BANK1) FUEL SYSTEM TOO LEAN

Possible failuer P0171

  • Low fuel pressure
  • Fuel feed line open / leak
  • Pressure regulator valve closed stuck
  • Fuel filter clogged
  • Fuel leak from Injector
  • Using meanness fuel, improper fuel or chemical admixture
  • HO2S S2 problem
  • EGR valve
  • Valve clearance problem
  • Exhaust gas leak

Diagnostic Procedure using AutoHex II Scan Tool

  • The data isn t obtained because B-CAN Frame can t be received.
  • The B-CAN System doesn t actuate.

Test Conditions using AutoHex tester

  • When B-CAN Data is sending

Clear Fault codes Conditions

  • The data isn t obtained because B-CAN Frame can t be received.
  • The B-CAN System doesn t actuate.

MIL Status

  • Keyless Access Indicator ON

Changing Dmaged DME in F Series


Note:

  • AutoHex II is a professional Auto diagnostic.
  • This fault code is a GERENRIC fault code, some cars may change the meaning of this fault code.
    To get the accurate fault code description you may use AutoHex II

More Fault codes:

OBD II Fault Code P0172
OBD II Fault Code P0173
OBD II Fault Code P0174
OBD II Fault Code P0175
OBD II Fault Code P0176
OBD II Fault Code P0177
OBD II Fault Code P0178
OBD II Fault Code P0179
OBD II Fault Code P017A
OBD II Fault Code P017B
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