Mazda CX-5 Service & Repair Manual: Heated Oxygen Sensor (HO2 S)

Mazda CX-5 Service & Repair Manual / Engine / Control / Heated Oxygen Sensor (HO2 S)

Purpose/Function

Detects the oxygen concentration (theoretical air/fuel ratio) in the exhaust gas as basic information for mainly determining the fuel injection amount and as information for determining the deterioration of catalytic converter.
Detects the oxygen concentration (theoretical air/fuel ratio) in the exhaust gas and inputs it to the PCM as an oxygen concentration (theoretical air/fuel ratio) signal.

Construction

Installed to the exhaust manifold.
A zirconia element has been adopted as the detecting element for detecting the oxygen concentration (theoretical air/fuel ratio).

Operation

Inputs the signal, which fluctuates according to the oxygen concentration (theoretical air/fuel ratio), to the PCM.

HO2S characteristic

Fail-safe


DTC No.	Fail-safe function
P0037:00	Stops the fuel feedback control of the HO2S.
P0038:00	Stops the fuel feedback control of the HO2S.

Heated Oxygen Sensor (HO2 S) Removal/Installation

WARNING: A hot engine and exhaust system can cause severe burns. Turn off the engine and wait until they are cool before removing the exhaust system. CAUTION: Do not allow fla ...

Intake Air Temperature (Iat) Sensor Inspection

IAT Sensor No.1 Resistance inspection NOTE: Because the IAT sensor No.1 is integrated in the MAF sensor, replacing the IAT sensor No.1 includes replacement of the MAF sensor/IAT sensor No ...

Other materials:

Floor Insulator Removal/Installation
Driver-side 1. Disconnect the negative battery cable.. 2. Remove the following parts: a. Driver-side front scuff plate. b. Driver-side front side trim. c. Decoration panel. d. Shift lever knob (MTX). e. Front console box. f. Shift panel. g. Upper panel. h. Rear console. i. Side ...

Blind Spot Monitoring (Bsm) Warning Alarm
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Controller Area Network (Can)
Outline The AWD control module (CM) sends and receives data to and from other modules via the CAN system. Refer to MULTIPLEX COMMUNICATION SYSTEM for a detailed explanation of the CAN system.. Data sent AWD system status Data received Engine speed Engin ...