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"Catalyst efficiency below threshold Bank 1" on a 2002 Toyota Sienna indicates that the engine control module (ECM) has detected that the catalytic converter on the first bank of cylinders is not performing effectively. This means it is not converting harmful exhaust gases into less harmful emissions as intended. Possible causes include a failing catalytic converter, issues with the oxygen sensors, or exhaust leaks. Addressing this issue typically requires diagnosing the specific cause and may involve replacing the catalytic converter or related components.
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Why does a 2000 Toyota Camry erratic code po420 what can you do about it?
It's Catalyst system efficiency below threshold
What does a P0420 code mean on a 2001 Toyota sienna?
Trouble code P0420 means:Catalyst system efficiency below threshold
What is check engine error code P0420 on a 2001 Sienna?
PO420 Catalyst System Efficiency Below Threshold. I believe it is catalyst system efficiency below threshold, bank 1. That is one option. Toyota had a problem with the ECM (Engine Control Module) giving this false code and manufactured a new ECM to eliminate this problem (ie. old part number 89661-0861 to new part number 89661-08062).
What causes p0420 code on 2002 Toyota tacoma?
Trouble code P0420 means: Catalyst System Efficiency Below Threshold (Bank 1)
What is code p0420 pd on a Toyota Sienna?
This code is generic and is the same on all vehicles. P0420 = Catalyst System Efficiency Below ThresholdCatalyst System Efficiency Below Threshold. This means that the secondary O2 sensor detects that the catalytic converter isn't working as efficiently as it should. This engine code can be triggered by any one of the following: 1.) The catalyst in the catalytic converter is cracked, clogged, or otherwise damaged. 2.) The secondary O2 sensor is malfunctioning. 3.) There is an exhaust leak. 4.) The computer unit is faulty
Where is the airbag module located on a 04 sienna?
The airbag module on an 04 Toyota Sienna is located at the front of the engine compartment. It monitors for impacts which cross a threshold which triggers the airbags.
P0420 on a Toyota corrolla verso 1.8?
Trouble code P0420 means:Catalyst system efficiency below threshold
How do you replace Toyota Sienna cabin air filter?
toyota sienna 2001
Where is the chassis number located in Toyota Sienna?
where is the classis location for toyota sienna
How do you replace a starter in a 2000 Toyota Sienna?
How to replace a starter in a 2009 toyota sienna
What size engine does the 2009 Toyota Sienna have?
The 2009 Toyota Sienna has a V6 engine.
What size engine does the 2013 Toyota Sienna have?
The 2013 Toyota Sienna has a V6 engine.
