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Home >> Mazda >> 2022 >> CX-5 S >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (On-Board Diagnostic - Engine Control System (VIN Y) (1 Of 7)) >> DTC P0087-00: High Fuel Pressure Sensor Circuit Range/Performance Problem >> Details On DTCs

Details On DTCs

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DTC P0087-00: (PCM, VIN Y) DETECTION CONDITION AND POSSIBLE CAUSE

DESCRIPTION High fuel pressure sensor circuit range/performance problem
DETECTION CONDITION Determination conditions
  • The actual fuel pressure is lower than the target fuel pressure by 1.2 MPa {12 kgf/cm2 , 174 psi} or more even though the fuel pressure feedback amount is maintained high.
Preconditions
  • Engine speed: 500 rpm or more(1)
  • The following DTCs are not detected:
  • High fuel pressure sensor: P0089-00:, P0192-00:, P0193-00:
  • High pressure fuel pump: P0091-00:, P0092-00:

(1) Standard can be verified by displaying PIDs using M-MDS
Malfunction determination period
  • 5 s period
Drive cycle
Self test type
  • CMDTC self test
Sensor used
  • High fuel pressure sensor
FAIL-SAFE FUNCTION
  • Limits intake air amount
  • Stops high pressure fuel pump control
VEHICLE STATUS WHEN DTCs ARE OUTPUT
  • Illuminates check engine light.
POSSIBLE CAUSE
  • Air suction in fuel line due to fuel is runout
  • High pressure fuel pump connector or terminals malfunction
  • High fuel pressure sensor connector or terminals malfunction
  • PCM connector or terminals malfunction
  • High fuel pressure sensor malfunction
  • Fuel delivery system malfunction (insufficient fuel pressure)
  • Fuel injector malfunction
  • High pressure fuel pump malfunction
    • Relief valve (built-into high pressure fuel pump) malfunction
  • PCM malfunction
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