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Home >> Subaru >> 2019 >> BRZ Series.Gray >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (2 Of 3) >> EFI System (FA20) >> DTC P0506: ISC Valve Characteristic {1} Low; DTC P0507: ISC Valve Characteristic {1} High >> Circuit description >> Typical Enabling Conditions
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Typical Enabling Conditions

Overlap prohibited DTC P0030, P0031, P0032 (air/fuel ratio sensor - heater)
P0068, P0107, P0108 (Vacuum (MAP) sensor)
P0117, P0118, P0125 (Engine Coolant Temperature (ECT) sensor)
P0122, P0123, P0222, P0223 (Throttle position sensor)
P0131, P0132 (air/fuel ratio sensor - ECM input voltage)
P0134, P2195, P2196 (Air/fuel ratio sensor - Output voltage)
P0300, P0301, P0302, P0303, P0304 (misfire)
P0500 (Vehicle Speed Sensor (VSS))
P0604, P0605 (ECM ROM)
P0851, P0852 (neutral position switch)
P1160 (throttle return spring)
P2101, P2102 (Throttle actuator control motor)
P2109 (Throttle position sensor minimum stop)
P2119 (Throttle actuator control)
P2122, P2123, P2127, P2128 (Accelerator Pedal Position
Sensor (APPS) circuit)
P2135 (Throttle position sensor (TPS) degree of correlation)
P2138 (Accelerator pedal position sensor (APPS) degree of correlation)
Atmospheric pressure 75.06 kPa {563 mmHg} or more
Battery Voltage 10.9V or more
Engine coolant temperature 60°C {140°F} or more
Elapsed time after starting the engine 10 seconds or more
λ 0.85 to 1.151
Vehicle speed 0 km/h {0 MPH}
Elapsed time after turning the neutral switch OFF ←→ON More than 5 seconds
Accelerator pedal position 0%
Cold start diagnosis Not Operated
F/B operation condition Closed loop
Idle speed control feed back In operation