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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If the vehicle battery is discharged
The following procedures may be used to start the engine if the vehicle’s battery is discharged. You can also call your Toyota dealer or a qualified repair shop. If you have a set of jumper (or booster) cables and a second vehicle with a 12-volt battery, you can jump start your vehicle by fo ...

Replacement
1. Drain brake fluid Notice: wash the brake fluid off immediately if it comes into contact with any painted surface. 2. Remove air cleaner cap sub–assy 3. Remove air cleaner case sub–assy  remove the air cleaner element, then remove the 3 bolts and air cleaner case sub–assy. ...

Rear axle lh hub bolt
Replacement Hint: components: 1. Remove rear wheel 2. Remove rear brake drum sub–assy 3. Remove rear axle lh hub bolt Using sst and a hammer handle or an equivalent, remove the lh hub bolt. Sst 09628–10011 4. Install rear axle lh hub bolt Install a washer and nut to a ...