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Home >> Hyundai >> 2018 >> Kona Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 80 (Engine Control System Diagnosis - 2.0L (6 Of 6)) >> DTC P2251-00: O2 Sensor Reference Ground Circuit/Open (Bank 1 Sensor 1) >> Wiring Inspection >> Circuit Inspection

Circuit Inspection

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G13507087Courtesy of KIA MOTORS AMERICA, INC.
G13507088Courtesy of KIA MOTORS AMERICA, INC.
Inspection Condition (+) Probe (-) Probe Specification
Connector Terminal Connector Terminal
  1. Ignition "OFF" disconnect HO2S (Bank1, Sensor1) connector.
  2. Ignition "ON".
HO2S (Bank1, Sensor1) connector 1 (nernst voltage) Chassis ground - 0V
HO2S (Bank1, Sensor1) connector 3 (virtual ground) Chassis ground - 0V
HO2S (Bank1, Sensor1) connector 6 (pumping current) Chassis ground - 0V
HO2S (Bank1, Sensor1) connector 4 (trim resistor) Chassis ground - 0V
  1. Ignition "OFF".
  2. Disconnect HO2S (Bank1, Sensor1) and ECM/PCM connector.
HO2S (Bank1, Sensor1) connector 1 (nernst voltage) ECM/PCM connector 104 (nernst voltage) Approx. below 1Ω
HO2S (Bank1, Sensor1) connector 3 (virtual ground) ECM/PCM connector 83 (virtual ground) Approx. below 1Ω
HO2S (Bank1, Sensor1) connector 6 (pumping current) ECM/PCM connector 105 (pumping current) Approx. below 1Ω
HO2S (Bank1, Sensor1) connector 4 (trim resistor) ECM/PCM connector 84 (trim resistor) Approx. below 1Ω

Good 

No Good