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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Precaution
Caution: replace the faulty parts of the seat belt systems (outer belt, inner belt, bolts, nuts, adjustable shoulder anchor, tether anchor hardware, sill–bar, etc.). Seat belt systems not in use at the time of a collision should also be inspected and replaced if found to be damaged or wo ...

Bluetooth® Audio (Multimedia system)
Listening to Bluetooth® Audio The Bluetooth® audio system enables the user to enjoy music played on a portable player from the vehicle speakers via wireless communication. When a Bluetooth® device cannot be connected, check the connection status on the “Bluetooth* Audio” screen. If the ...

Setting the tire pressure (vehicles with a tire pressure warning system)
In the following situations, it will be necessary to perform the tire inflation pressure setting procedure of the tire pressure warning system. When the specified tire inflation pressure has changed, such as due to carried load, etc. When the tire inflation pressure is changed such as when t ...