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Home >> Subaru >> 2017 >> BRZ Series.Yellow >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (1 Of 3) >> EFI system (FA20) >> DTC P0107 Manifold Absolute Pressure/Barometric Pressure Circuit Low Input; DTC P0108 Manifold Absolute Pressure/Barometric Pressure Circuit High Input >> Circuit description >> Notes
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Circuit description: Notes

The sensor built in the air pressure sensor ASSY detects an intake manifold pressure as a voltage. Also, the air pressure sensor ASSY is not affected by air pressure variation caused by a change in altitude or other factors because it detects pressure inside the intake manifold via absolute pressure instead of barometric pressure as reference.

DTC No. DTC detection condition Suspected parts
P0107 Vacuum sensor voltage is 0.610V or less for 2.0 seconds or longer.
(1-trip detection logic)
  • Open or short condition in vacuum sensor circuit
  • Vacuum sensor
  • ECM
P0108 Vacuum sensor voltage is 3.906V or more for 2.0 seconds or longer.
(1-trip detection logic)
NOTE: After checking diagnostic code outputs, read the following menu items using the SSM4: [Each System]/[Engine Control System]/[Data monitor]/[Mani. Absolute Pressure] (Refer to Data monitor/active test )
Intake manifold pressure Content of malfunction
Approx. 0 kPa
  • Short circuit in PIM circuit and ground system
  • Short circuit in E1 circuit and PIM circuit
141 kPa or more
  • Short circuit in VC circuit and PIM circuit
  • Open circuit in PIM circuit
  • Open circuit in E1 circuit