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)
Other materials:
Engine
On–vehicle inspection
Hint:
inspect these items on a cooled down engine.
1. Inspect drive belt
2. Replace spark plugs
3. Inspect air filter
Remove the air filter.
visually check that the air filter is not excessively damaged,
dirty or oily.
Peplace the air filter if nece ...
Dialing from call histories
1 Select “All calls”, “Missed calls”, “Incoming calls” or “Outgoing calls” using
.
2 Select the desired number using
and press the off-hook switch.
The following operations can be performed:
● Registering a number as a speed dial
Press (Add S. Dial) and then press
an ...
Cooling
Preparation
Recomended tools
Equipment
Coolant
...


