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Home >> Infiniti >> 2017 >> QX30 Luxury, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (4 Of 5) >> DTC/Circuit Diagnosis >> DTC P064D: ECM >> DTC Description >> DTC Detection Logic
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DTC Detection Logic

DTC No. CONSULT screen terms DTC detecting condition
DTC
(Trouble diagnosis content)
Malfunction type
P064D 04 CONTROL MODULE
(Internal control module O2 sensor processor performance bank 1)
SYSTEM INTERNAL MALFUNCTN The processor of the oxygen sensor (cylinder bank 1) in the control unit has a malfunction. There is an internal malfunction.
84 SIG BELOW ALLOWABLE RANGE The processor of the oxygen sensor (cylinder bank 1) in the control unit has a malfunction. There is a signal below the permissible limit value.
85 SIG ABOVE ALLOWABLE RANGE The processor of the oxygen sensor (cylinder bank 1) in the control unit has a malfunction. There is a signal above the permissible limit value.
86 SIGNAL INVALID The processor of the oxygen sensor (cylinder bank 1) in the control unit has a malfunction. There is an incorrect signal.