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.

SYS.OK|MANUAL.DB● LIVE

HOMESERVICE MANUALSHYUNDAI2014SANTA FE XL PREMIUMREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM DIAGNOSIS (1 OF 3)DTC P0088: FUEL RAIL/SYSTEM PRESSURE - TOO HIGHSYSTEM INSPECTION

2014 Hyundai Santa Fe XL Premium

System Inspection

2014 Hyundai Santa Fe XL PremiumSECTION System Inspection

Check fuel leakage
1. Check following item visually.
  - Connector connection state.
  - Damage/connection state for vacuum hoses connected to fuel line.
  - Bent/pressed/twisted fuel line or fuel leakage.
2. Has a problem found in this procedure?
  YES
  - Repair or replace it which has a problem, and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  - Go to " 2 Check Low Pressure Fuel Line" as follows.
Check high pressure pump
1. Connect GDS to DLC (Data Link Cable).
2. Start the engine and monitor "Rail Pressure Sensor" parameter on GDS at accelerating.
  Specification : the fuel rail pressure will be increased while accelerating the vehicle.
  
  Fig 1: Display - Rail Pressure Sensor Current Data Screen
  Courtesy of HYUNDAI MOTOR AMERICA
3. Are the parameters displayed correctly?
  YES
  - Go to " 3 Check injector" as follows.
  NO
  - Repair or replace high pressure pump, and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check injector for normal operation
1. Start engine.
2. Check its RPM decrease when doing the injector's actuation test.
3. Is there any cylinder with no change in RPM or only a small change in RPM?
  YES
  - Replace injector, and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  - Go to "COMPONENT INSPECTION " as follows.

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready Tools Free Quote Check Quote Shield Pro

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.