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Toyota Corolla Repair Manual: Evaporative emission control system leak detected

Toyota Corolla Repair Manual / Diagnostics / Sfi system / Evaporative emission control system leak detected

Dtc p0442 evaporative emission control system leak detected (small leak)

Dtc p0456 evaporative emission control system leak detected (very small leak)

Inspection procedure
Hint: if dtc p0441 (purge flow), p0446 (vsv for ccv or vsv for pressure switching valve), p0451, p0452 or p0453  is output with dtc p0442 or p0456 , first troubleshoot dtc p0441, p0446 ...

Circuit description
The vapor pressure sensor and the vsv for the canister closed valve (ccv) are used to detect abnormalities in the evaporative emission control system. The ecm decides whether there is an abnormal ...

Other materials:

Setup menu
You can adjust the multimedia system to your desired settings. Display Setup screen Press the SETUP button to display the Setup screen. 1 Select to adjust the settings for operation sounds, screen animation, etc. 2 Select to set the voice settings. 3 Select to adjust the settings for ...

Vehicle information
This screen can be used to display the fuel consumption. Trip Information or Past Record screen Press CAR to display the Trip Information or Past Record screen. Fuel consumption ■ Trip information If the Trip Information screen does not appear, select Trip Information. 1 Av ...

Inspection procedure
1 Check front airbag sensor (lh) circuit (to b+)(airbag sensor assy center airbag sensor front lh) Disconnect the negative () terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connectors between the airbag sensor assy center and the airbag sens ...

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