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)

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Malfunction in speedometer
Wiring diagram Inspection procedure 1 Check combination meter assy Remove the combination meter assy with connector still connected.  check voltage.  Jack up either of the front wheels.  Shift the shift lever to neutral.  Turn the ignition switch to on ...

License plate lamp assy
Replacement 1. Remove luggage compartment lock cylinder & key set 2. Remove luggage compartment door garnish outside 3. Remove license plate lamp assy Pull the license plate light assy to the side of vehicle as shown in the illustration and release the claw.  disconnect the c ...

Overhaul
1. Remove oil filler cap sub–assy Remove the oil filler cap from the cylinder head cover. 2. Remove oil filler cap gasket Using a screwdriver, remove the gasket from the oil filler cap. 3. Remove ventilation valve sub–assy Remove the ventilation valve from the cyl ...