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P1442 Toyota Code - Stuck Closed In Secondary Air Injection Vacuum Switching Valve Bank 1

- Code Popularity: 55,868 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1442 Toyota?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Vacuum Switching Valve (VSV)
  • VSV for air injection control circuit Bank 1
  • Air Switching Valve Bank 1
  • VSV for air injection system Bank 1
  • Engine Control Module (ECM)
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How to Fix the DTC P1442 Toyota?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1442 Toyota code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P1442 Toyota Description

The Engine Control Module (ECM) detects pressure change with the pressure sensor to determine malfunctioning parts in the system,and stores the DTCs. The ECM measures pressure and/or exhaust pulsation of the system at 6 points, A to F, when the air injection system is in operation or when not in operation. When the pressure is high, the ECM determines that the pump operates. When exhaust pulsation is detected, the ECM determines that the ASV is open. The ECM determines malfunction parts based on the measured value, and stores the DTCs.
Points A and B:
ECM detects pressure changes (decrease) and determines that the ASV No.2 is open.
Points C and F:
ECM detects pressure and exhaust pulsation and determines the pressure pattern of the system.
Point D:
ECM operate the system, as indicated by the dashed lines, to determine which of the ASV No.2 is malfunctioning only when pressure changes cannot be detected at point B.
Point E:
ECM detects exhaust pulsation to determine the condition of the system.
OBDII Code P1442 Toyota - Stuck Closed In Secondary Air Injection Vacuum Switching Valve Bank 1 - AutoCodes.com
P1442 Toyota Code - Stuck Closed In Secondary Air Injection Vacuum Switching Valve Bank 1

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Code P1442 Toyota comments

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