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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Replacement
Hint: installation is according to the reverse order of the removal. 1. Remove fr wiper arm rh 2. Remove fr wiper arm lh 3. Remove hood to cowl top seal 4. Remove cowl top ventilator louver lh 5. Remove cowl top ventilator louver rh 6. Remove front door weatherstrip rh 7. Remove front ...

Fuel
Service data Torque specification Emission control Service data ...

Maintenance requirements
To ensure safe and economical driving, day-to-day care and regular maintenance are essential. It is the owner's responsibility to perform regular checks. Toyota recommends the maintenance below. ■Repair and replacement It is recommended that genuine Toyota parts be used for repairs to ensure perf ...