Isuzu
    Isuzu DTC

    Isuzu Fault Code P1665: Suction Control Valve circuit fault

    P1665 on Isuzu engines means: Suction Control Valve circuit fault.

    Code details

    Manufacturer
    Isuzu
    Applies to
    Isuzu diesel trucks
    Fault code
    P1665
    Component / signal
    SCV System

    What to do next

    • Read active and inactive codes with the OEM service tool and note the occurrence count.
    • Have a heavy-duty diesel technician confirm the fault against the engine or chassis service manual before replacing parts.

    Get this code diagnosed

    Send one request and nearby diesel shops and mobile mechanics can quote the repair.

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    Source: Isuzu engine fault code guide (WD Part). See also OBD-II codes.