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.
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HOMESERVICE MANUALSHYUNDAI2022IONIQ PLUG-IN HYBRID SELREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM DIAGNOSIS (PHEV) (1 OF 3)DTC P0133: O2 SENSOR CIRCUIT SLOW RESPONSE (BANK 1/SENSOR 1)SYSTEM INSPECTIONCHECK FUEL PRESSURE
2022 Hyundai Ioniq Plug-In Hybrid SEL
Check Fuel Pressure
2022 Hyundai Ioniq Plug-In Hybrid SELSECTION Check Fuel Pressure
- IG KEY "OFF".
- Connect fuel pressure gauge on the fuel filter with fuel pressure gauge adaptor.
- Start engine again and measure fuel pressure.
Specification: 4.89 ~ 5.30 kgf/cm2
- Is the fuel pressure normal?
YES
- Go to "COMPONENT INSPECTION " procedure.
NO
- Check any damage of fuel return hose or pipe.
- Check any stuck of the valve in the fuel pressure regulator.
- Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
RENDER: 1.0x
NO RELATED
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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.