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

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?
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Possible 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)
What does this mean? What does this mean?
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1442 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.

P1442 Information for specific makes
P1442 ACURA Evaporative Emission Canister Purge System Vacuum Switch Malfunction
P1442 AUDI EGR Valve Position Sensor Signal Too High
P1442 BMW Leakage Diagnostic Pump Control Circuit Signal Low
P1442 BUICK EVAP Vacuum Switch High Voltage During Ignition On
P1442 CADILLAC EVAP Vacuum Switch High Voltage During Ignition On
P1442 CHEVROLET EVAP Vacuum Switch High Voltage During Ignition On
P1442 FORD EVAP System Small Leak Detected
P1442 GMC EVAP Vacuum Switch High Voltage During Ignition On
P1442 HONDA Evaporative Emission Canister Purge System Vacuum Switch Malfunction
P1442 INFINITI Evaporative Emission Control System Leak Detected
P1442 ISUZU EVAP Vacuum Switch Voltage High During Ignition On
P1442 LEXUS Stuck Closed In Secondary Air Injection Vacuum Switching Valve Bank 1  P1442 Image
P1442 LINCOLN EVAP System Small Leak Detected
P1442 MAZDA EVAP System Control Leak Detected
P1442 MERCURY EVAP System Small Leak Detected
P1442 NISSAN Evaporative Emission Control System Leak Detected
P1442 SAAB Evaporative Emission System / Fuel Tank Level Sensor Small Leak Detected / Malfunction
P1442 SCION Stuck Closed In Secondary Air Injection Vacuum Switching Valve Bank 1  P1442 Image
P1442 SUBARU Fuel Level Sensor 2 Circuit Range/Performance problem
P1442 TOYOTA Stuck Closed In Secondary Air Injection Vacuum Switching Valve Bank 1  P1442 Image
P1442 VOLKSWAGEN EGR Valve Position Sensor Signal Too High
Related Information
Repair Importance Level: 3
 
1=Low 2=Medium 3=High What does this mean?
Repair Difficulty Level: 3
 
1=Easy 2=Moderate 3=Hard What does this mean?
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