Having problems with your 2004 Toyota Sienna ?

Check engine lite,code p0430 for a 2005 toyota sienna

Posted / edited by AnonymousUser on : 02-12-2019

Answers :

Hello. Your P-0420-code is most likely due to a bad Air-Fuel sensor; Bank one, Sensor one. This sensor is on the exhaust manifold, closest to the firewall.
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\015\012We would recommend replacing this sensor.
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\015\012Note: Please use a genuine Toyota sensor; the aftermarket sensors do not deliver the correct voltage to the computer. If you purchase an aftermarket sensor, your problem will not be corrected; we see this quite often in our service department.
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\015\012We hope that this helps you out.-
Repair Help & Product Troubleshooting for 2004 Toyota Sienna

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