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Home >> Mitsubishi >> 2003 >> Lancer Evolution >> Repair and Diagnosis >> External Pages >> Different car >> Section 30 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P0171: Fuel Injection System Too Lean - Bank 1, DTC P0172: Fuel Injection System Too Rich - Bank 1, DTC P0174: Fuel Injection System Too Lean - Bank 2 &/Or DTC P0175: Fuel Injection System Too Rich - Bank 2 >> DTC Confirmation Test (Using CONSULT-II)
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DTC Confirmation Test (Using CONSULT-II)

WARNING: This page is about a different car, the 2002 Nissan Maxima and 2002 Infiniti I35. However, it is still accessible from the selected car via links, so may be relevant.
  1. Start engine and warm to normal operating temperature. Turn ignition off and wait at least 10 seconds. Turn ignition on. Select SELF-LEARNING CONT in WORK SUPPORT mode with CONSULT-II. Clear self-learning control coefficient by pressing CLEAR.
  2. Select DATA MONITOR mode with CONSULT-II. Start engine and let it idle for at least 10 minutes. If 1st trip DTC is detected, go to DIAGNOSTIC PROCEDURE  . If 1st trip DTC is not detected, go to next step.
  3. If it is difficult to start engine, fuel injection system has a malfunction. Crank engine while depressing accelerator pedal. If engine starts, go to DIAGNOSTIC PROCEDURE  . If engine does not start, check for intake and exhaust leaks or spark plug fouling.
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