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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Inspection procedure
Hint: this dtc chart is on the premise that the engine is cranked normally. If the engine is not cranked, proceed to the problem symptoms table on page 05–42. Read freeze frame data using the hand-held tester or the obd ii scan tool. Freeze frame data records the engine conditions ...

Inspection procedure
1 Check d squib circuit(airbag sensor assy center – horn button assy) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connectors between the horn button assy and the airbag sensor assy center.  for the blac ...

Shifting the shift lever to R
Shift the shift lever to R while lifting up the ring section. ■Maximum allowable speeds Observe the following maximum allowable speeds in each gear when maximum acceleration is necessary. mph (km/h) NOTICE ■To prevent damage to the transmission ●Do not lift up the ring ...