Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC Description
DTC DETECTION LOGIC
| DTC | CONSULT screen terms (Trouble diagnosis content) | DTC detection condition | ||
| P0088-00 | HIGH FUEL PRES (Fuel rail/system pressure - too high) | A | Diagnosis condition |
|
| Signal (terminal) | Fuel rail pressure sensor signal | |||
| Threshold | Fuel rail pressure remains at more than 16.5 MPa (168.3 kg/cm2, 2392.5 psi) | |||
| Diagnosis delay time | 1 second or more | |||
| B | Diagnosis condition | Engine running (regardless of water temperature) | ||
| Signal (terminal) | Fuel rail pressure sensor signal | |||
| Threshold | Actual fuel pressure - Target fuel pressure = 2.7 MPa (27.5 kg/cm2, 392 psi) or more | |||
| Diagnosis delay time | 5 seconds or more | |||
POSSIBLE CAUSE
- Harness or connectors (The high pressure fuel pump circuit is open or shorted.)
- High pressure fuel pump
FAIL-SAFE
Engine Control System
| Fail safe mode | Vehicle behavior | |
|---|---|---|
| Traveling control mode | Accelerator angle variation control | ECM controls the accelerator pedal depression speed to make it slower than actual speed. This causes a drop in accelerating performance and encourages the driver to repair malfunction.
NOTE:
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| Engine output control | ECM reduces the engine output, according to the rise in engine speed. This reduces the vehicle speed to encourage the driver to repair malfunction. Driving at 70 km/h (44 MPH) or more is possible.
NOTE:
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| Device fix mode |
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| Combustion control mode | Stratified charge combustion control at starting | No stratified charge combustion at starting (cold start). |
Idle Start/Stop System
When a DTC is detected, the start/stop indicator lamp blinks slowly and the idle start/stop system operation is prohibited. When ECM detects error while operating the idle start/stop system, ECM restarts the engine.
NO RELATED
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.