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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 208 (Engine Control System (DTC/Circuit Diagnosis) (CUMMINS 5.0L) (5 Of 6)) >> DTC/Circuit Diagnosis >> DTC P206D-00: REDUCTANT Quality Sensor Circuit High >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DTC PRIORITY 
    1. Turn ignition switch ON.
    2. Connect CONSULT and check for other existing "ENGINE" diagnostic trouble codes.

    If DTC U02A2-00 is present, perform the confirmation procedure (diagnosis procedure) for this other DTC first.

    Is applicable DTC detected?

    YES

    Perform diagnosis of applicable DTC. Refer to DTC Description .

    NO

    GO TO 2 .

  2. CHECK FOR CURRENT DEF QUALITY SENSOR DTC 

    Check for DTC P206D-00 current on the CONSULT screen.

    Is applicable DTC current?

    YES

    GO TO 3 .

    NO

    Refer to Intermittent Incident .

  3. CHECK FOR CURRENT DTC 
    1. Using CONSULT, erase "ENGINE" diagnostic trouble codes.
    2. Start the engine and let it idle for 1 minute.
    3. Turn ignition switch OFF.
    4. Turn ignition switch ON.
    5. Using CONSULT, check for current "ENGINE" diagnostic trouble codes.

    Is P206D-00 DTC current?

    YES

    Replace the DEF quality sensor. Refer to Exploded View .

    NO

    Repair complete.

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