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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R Spec V >> Repair and Diagnosis >> External Pages >> Different car >> Section 70 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P0171: Fuel Injection System Too Lean - Bank 1, DTC P0172: Fuel Injection System Too Lean - Bank 2, DTC P0174: Fuel Injection System Too Rich - Bank 1 Or DTC P0175: Fuel Injection System Too Rich - Bank 2 >> DTC Confirmation Test (Using Generic Scan Tool)
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DTC Confirmation Test (Using Generic Scan Tool)

WARNING: This page is about a different car, the 2002 Nissan Xterra and 2002 Nissan Frontier. 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 5 seconds. Disconnect MAF sensor harness connector. See Figure or Figure . Start engine and let it idle for at least 5 seconds. Turn ignition off and reconnect MAF sensor harness connector.
  2. Using scan tool, Select MODE 3, and ensure DTC P0102 is detected. Select MODE 4 and erase DTC. Start engine and let it idle for at least 10 minutes. Select MODE 7. If 1st trip DTC is detected, go to appropriate 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. Attempt to start engine while depressing accelerator pedal. If engine starts, go to appropriate DIAGNOSTIC PROCEDURE. If engine does not start, visually check for intake and exhaust leaks or spark plug fouling.
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