LEMON Manuals: Even more car manuals for everyone
Home >> Land Rover >> 2003 >> Range Rover >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - With Codes >> Diagnostic Tests >> DTC P0171: Lambda Control Adaption Exceeds Upper Limit Bank 1 - Too Lean >> Bosch ME7.2 EMS DTC P0171 - Lambda Control Adaption Exceeds Upper Limit Bank 1: Last Occurrence - Maximum Signal >> Possible Causes

Possible Causes

  1. Fuel system leak. See step  1 under CHECK.
  2. Injector leak. See step  2 under CHECK.
  3. Fuel pressure regulation (3.5 Bar Maximum). See step  3 under CHECK.
  4. Fuel pump. See step  4 under CHECK.
scientia non olet · About LEMON Manuals