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HOMESERVICE MANUALSTOYOTA2018PRIUS TWO ECOREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM - DIAGNOSTIC CODES (4 OF 8)SFI SYSTEMDTC P0403-14: EXHAUST GAS RECIRCULATION "A" CONTROL CIRCUIT 1 OPEN; DTC P1400-00: EXHAUST GAS RECIRCULATION "A" CONTROL CIRCUIT 2 OPEN; DTC P1405-96: EXHAUST GAS RECIRCULATION "A" CONTROL CIRCUIT 3 OPEN; DTC P1410-04: EXHAUST GAS RECIRCULATION "A" CONTROL CIRCUIT 4 OPEN [07/2020 - ]TYPICAL MALFUNCTION THRESHOLDS
2018 Toyota Prius Two Eco

Typical Malfunction Thresholds

2018 Toyota Prius Two EcoSECTION Typical Malfunction Thresholds
RANGE CHECK (EGR1)

Motor phase 1 (EGR1) output terminal voltage level Low
RANGE CHECK (EGR2)

Motor phase 2 (EGR2) output terminal voltage level Low
RANGE CHECK (EGR3)

Motor phase 3 (EGR3) output terminal voltage level Low
RANGE CHECK (EGR4)

Motor phase 4 (EGR4) output terminal voltage level Low
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.