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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Heated steering wheel/seat heaters
Heated steering wheel Warms up the grip of the steering wheel Seat heaters Warm up the seat upholstery WARNING To prevent minor burn injuries Care should be taken if anyone in the following categories comes in contact with the steering wheel or seats when the heater is on: Babies, small chil ...

General information
There are many ecu controlled systems used in the corolla. In general, ecu controlled system are considered to be very intricate and require a high level of technical knowledge and expert skill to troubleshoot. The fact is, however, that if you proceed by inspecting the circuits one by one, ...

Head restraints
Head restraints are provided for all seats. WARNING ■Head restraint precautions Observe the following precautions regarding the head restraints. Failure to do so may result in death or serious injury. Use the head restraints designed for each respective seat. Adjust the head restraints to th ...