DTC Detection Logic

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P0090

FUEL PRESSURE CONTROL FUNCTION

(Fuel pressure regulator 1 control circuit)

Diagnosis condition

Engine running at idle

Signal (terminal)

--

Threshold

• Fuel rail pressure remains at 1, 100 kPa (11.22 kg/cm ² , 159.5 psi) or more during engine rev
• Fuel rail pressure remains at 18, 500 kPa (188.7 kg/cm ² , 2, 682.5 psi) or more during engine rev

Diagnosis delay time

5 seconds or more