Suzuki Burgman 400 - Service manual > Heated Oxygen Sensor (HO2S) Removal and Installation


! WARNING Do not remove the HO2 sensor while it is hot.


1) Disconnect the HO2 sensor coupler (1) and remove the clamp (2).

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2) Remove the HO2 sensor (3).

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! CAUTION Do not apply oil or other materials to the sensor air holes.

Install the HO2 sensor in the reverse order of removal.

Pay attention to the following point:

Tightening torque
  HO2 sensor: 48 N*m (4.8 kgf-m, 34.5 lb-ft)

Heated Oxygen Sensor (HO2S) Inspection

Inspect the HO2 sensor in the following procedures:

1) Inspect the HO2 sensor and its circuit referring to flow table of the malfunction code (C44). Refer to "DTC "C44" (P0130, P0135): HO2 Sensor (HO2S) Circuit Malfunction".

2) Disconnect the HO2 sensor coupler (1).

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3) Check the resistance between the terminals (W - W) of the HO2 sensor. If the resistance is not within the standard range, replace the HO2 sensor with a new one.

Approx. 11.5 - 14.5 Ω (at 23 ºC)

Special tool (A): 09900-25008 (Multi-circuit tester set)

Tester knob indication
Resistance (Ω)

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4) Connect the HO2 sensor coupler securely.

! CAUTION Do not apply oil or other materials to the sensor air hole.

PCV Hose Inspection

Inspect the PCV hose (1) for wear and damage.

If it is worn or damaged, replace the PCV hose with a new one.

Check that the PCV hose (1) is securely connected.

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PCV Hose Removal and Installation


1) Remove the PCV hose (1).

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Install the PCV hose in the reverse order of removal.


Service Data

FI Sensors

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Unit: mm (in)

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Tightening Torque Specifications

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Reference: For the tightening torque of fastener not specified in this section, refer to "Tightening Torque Specifications".

Special Tools and Equipment

Special Tool

Emission Control Devices09900-25008 Multi-circuit tester set

See also:

 Suzuki Burgman 400 - Service manual > Fuel Injection System Description

Precautions Precautions for Emission Control Devices Refer to "General Precautions. General Description

 Suzuki Burgman 400 - Service manual > Engine Electrical Devices

Precautions Precautions for Engine Electrical Device Refer to "General Precautions" and "Precautions for Electrical Circuit Service".

Maxi Scooters: