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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Speed control main switch assy
Replacement 1. Disconnect battery negative terminal 2. Inspect place front wheels facing straight ahead 3. Remove horn button assy 4. Remove steering wheel assy sst 09950–50013 (09951–05010, 09952–05010, 09953–05020, 09954–05021) 5. Remove speed control main switch assy Remov ...

Have the malfunction repaired immediately. (vehicles with a smart key system)
After taking the specified steps to correct the suspected problem, check that the warning message and light go off. ■Warning buzzer ...

Cleaning and protecting the vehicle interior
The following procedures will help protect your vehicle’s interior and keep it in top condition: Protecting the vehicle interior Remove dirt and dust using a vacuum cleaner. Wipe dirty surfaces with a cloth dampened with lukewarm water. Cleaning the synthetic leather areas ● Remove l ...