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P2432 LEXUS

P2432 LEXUS - Secondary Air Injection System Air Flow/Pressure Sensor Circuit Low Bank 1

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Pressure Sensor
  • Pressure Sensor harness is open or shorted
  • Pressure Sensor circuit poor electrical connection
  • When is the code detected?

    The Engine Control Module (ECM) monitors the pressure in the secondary air passage using the pressure sensor located on the air switching valve in the secondary air injection system.
    If there is a defect in the sensor or the sensor circuit, the voltage level deviates from the normal operating range, the ECM interprets this deviation as a malfunction in the pressure sensor or circuit and sets a Detected Trouble Code (DTC).

    Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • P2432 Lexus Description

    The Secondary Air injection (AIR) system consists of an air pump, the Air Switching Valve (ASV), a pressure sensor, the Air Injection Control Driver (AID) and the Engine Control Module (ECM). For a short time after cold engine starts, the AIR system pumps secondary air to the exhaust port of the cylinder head to purify the exhaust emissions. The secondary air is supplied by the air pump and is pumped to the exhaust port through the ASV.

    The AID drives the ASV and the air pump according to command signals transmitted by the ECM. The pressure sensor detects the pressure in the secondary air passage when the AIR system is ON and OFF, and transmits pressure signal to the ECM.

    The AID is not only equipped to drive the pump and valve, but also with a diagnosis function to detect malfunctions in the AIR system circuit.

    HINT: As a large current is required to drive the air pump and ASV, an AID has been added to the previous system.

    OBDII Code P2432 Lexus - Secondary Air Injection System Air Flow/Pressure Sensor Circuit Low Bank 1 - Autoodes.com

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    Repair Importance Level: 3
     
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    Repair Difficulty Level: 3
     
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