Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Sfi system / Catalyst system efficiency below threshold

Toyota Corolla (E120): Catalyst system efficiency below threshold

Dtc p0420 catalyst system efficiency below threshold (bank 1)

Share this page:

Other materials:

Starting off on a steep uphill
► Automatic transmission or continuously variable transmission 1 Make sure that the parking brake is set and shift the shift lever to D. 2 Gently depress the accelerator pedal. 3 Release the parking brake. ► Manual transmission 1 With the parking brake firmly set and the clutch pe ...

Screen for general settings
1 Press the “SETUP” button. 2 Select “General” on the “Setup” screen. 1 “English”, “Français” or “Español” can be selected. 2 On/off can be selected to sound beeps. 3 Select to change the screen color. 4 Select to change the keyboard layout. 5 The animatio ...

Inspection procedure
1 Inspect parking brake switch circuit Check for open and short circuit in parking brake switch circuit 2 Inspect brake fluid level warning switch circuit Check the brake fluid level in reservoir.  check for open and shot circuit in brake fluid level warning switch circuit ...