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Generic Fault Codes & DTC List

Manufacturer and ECU-specific fault-code meanings. Check the stated ECU, model and code format against your diagnostic scan.

Generic fault codes — page 20
CodeMeaningApplicability
P0526Engine coolant blower motor speed sensor circuit malfunctionGeneric Generic OBD
P0527Engine coolant blower motor speed sensor circuit range/performanceGeneric Generic OBD
P0528Engine coolant blower motor speed sensor no signalGeneric Generic OBD
P0529Engine coolant blower motor speed sensor circuit intermittentGeneric Generic OBD
P052ACold Start "A" Camshaft Position Timing Over-AdvancedGeneric Generic OBD
P052BCold Start "A" Camshaft Position Timing Over-RetardedGeneric Generic OBD
P052CCold Start "A" Camshaft Position Timing Over-AdvancedGeneric Generic OBD
P052DCold Start "A" Camshaft Position Timing Over-RetardedGeneric Generic OBD
P052EPositive Crankcase Ventilation Regulator Valve PerformanceGeneric Generic OBD
P052FISO/SAE ReservedGeneric Generic OBD
P0530AC refrigerant pressure sensor -circuit malfunctionGeneric Generic OBD
P0531AC refrigerant pressure sensor -range/performance problemGeneric Generic OBD
P0532AC refrigerant pressure sensor -low inputGeneric Generic OBD
P0533AC refrigerant pressure sensor -high inputGeneric Generic OBD
P0534AC refrigerant charge lossGeneric Generic OBD
P0535AC evaporator temperature sensor -circuit malfunctionGeneric Generic OBD
P0536AC evaporator temperature sensor circuit range/performanceGeneric Generic OBD
P0537AC evaporator temperature sensor -circuit lowGeneric Generic OBD
P0538AC evaporator temperature sensor -circuit highGeneric Generic OBD
P0539AC evaporator temperature sensor -circuit intermittentGeneric Generic OBD
P053APositive Crankcase Ventilation Heater Control Circuit /OpenGeneric Generic OBD
P053BPositive Crankcase Ventilation Heater Control Circuit LowGeneric Generic OBD
P053CPositive Crankcase Ventilation Heater Control Circuit HighGeneric Generic OBD
P053DISO/SAE ReservedGeneric Generic OBD
P053EISO/SAE ReservedGeneric Generic OBD
P053FISO/SAE ReservedGeneric Generic OBD
P0540Intake air heater A -circuit malfunctionGeneric Generic OBD
P0541Intake air heater A -circuit lowGeneric Generic OBD
P0542Intake air heater A -circuit highGeneric Generic OBD
P0543Intake air heater A -circuit openGeneric Generic OBD
P0544Exhaust gas recirculation temperature (EGRT) sensor, bank 1 -circuit malfunctionGeneric Generic OBD
P0545Exhaust gas recirculation temperature (EGRT) sensor, bank 1 -low inputGeneric Generic OBD
P0546Exhaust gas recirculation temperature (EGRT) sensor, bank 1 -high inputGeneric Generic OBD
P0547Exhaust gas temperature sensor, bank 2 sensor 1 circuit malfunctionGeneric Generic OBD
P0548Exhaust gas temperature sensor, bank 2 sensor 1 circuit lowGeneric Generic OBD
P0549Exhaust gas temperature sensor, bank 2 sensor 1 circuit highGeneric Generic OBD
P054ACold Start "B" Camshaft Position Timing Over-AdvancedGeneric Generic OBD
P054BCold Start "B" Camshaft Position Timing Over-RetardedGeneric Generic OBD
P054CCold Start "B" Camshaft Position Timing Over-AdvancedGeneric Generic OBD
P054DCold Start "B" Camshaft Position Timing Over-RetardedGeneric Generic OBD
P054EISO/SAE ReservedGeneric Generic OBD
P054FISO/SAE ReservedGeneric Generic OBD
P0550Power steering pressure (PSP) sensor/switch circuit malfunctionGeneric Generic OBD
P0551Power steering pressure (PSP) sensor/switch range/performance problemGeneric Generic OBD
P0552Power steering pressure (PSP) sensor/switch -low inputGeneric Generic OBD
P0553Power steering pressure (PSP) sensor/switch -high inputGeneric Generic OBD
P0554Power steering pressure (PSP) sensor/switch -circuit intermittentGeneric Generic OBD
P0555Brake servo pressure sensor -circuit malfunctionGeneric Generic OBD
P0556Brake servo pressure sensor -circuit range/performanceGeneric Generic OBD
P0557Brake servo pressure sensor -circuit low inputGeneric Generic OBD

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