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Home >> Infiniti >> 2017 >> QX30 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (5 Of 5) >> DTC/Circuit Diagnosis >> DTC P2603: Coolant Pump >> DTC Description >> DTC Detection Logic
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DTC Detection Logic

DTC No. CONSULT screen terms DTC detecting condition
(Trouble diagnosis content) Malfunction type
P2603 00 COOLANT PUMP A
(Coolant pump "A" circuit high)
NO SUBTYPE INFORMATION The output for the coolant pump has a short circuit to positive.
12 CIRCUIT SHORT TO BATTERY The output for the coolant pump has a short circuit to positive. There is a short circuit to positive.