P0088: Fuel System Pressure - High; Dtc: P0088 - Hino Motors HINO 155 series Workshop Manual

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DTC: P0088

P0088: Fuel system pressure - High

INFORMATION
Pressure feeding pipe
Pressure limiter
Overflow
valve
Fuel filter
1. Technical description
• Common rail pressure is controlled by a discharge rate of the supply pump.
• Discharge rate of the supply pump is adjusted by the SCV (suction control valve).
<Description of malfunction>
• Abnormally high fuel pressure inside common rail is detected.
2. DTC set condition
(1) DTC detection condition
• Common rail pressure is normal.
• Battery voltage is in the range of 10 V to 16 V.
(2) Judgement criteria
• A calculated value of (actual common rail pressure reading – Target common rail pressure.) remains at 232
MPa or greater for 1 seconds.
3. Reset condition
• After restoration to normal condition and starter key "ON"
4. Indication, warning or system control regulation when the DTC is set.
• MIL: OFF
• SVS light: OFF
• Cruise control function is not available.
ENGINE (J05E)/TROUBLESHOOTING
Flow damper
Common rail
Pre fuel filter
Injection
pipe
Overflow pipe
Supply pump
EN01H02127030602016035
Injector
Leakage pipe
Through feed pipe
Fuel tank
SHTS021270300156