× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
2002 Toyota Sienna LE 3.0L MIL Lamp on
Posted to Asian Driveability on 10/31/2012 13 Replies

Evening All,

Thank you for taking the time to read this!

This Sienna Intermittently throws an P0420b code.

When this started we first put in the three sensors, based on the mileage. Code came back in one month. Next after watching the rear O2 sensor on nume...

13 Replies Received (View Replies)

  Related Documents & Media  2002 Toyota Sienna LE

 
Message Closed w/Summary

car Vehicle Data

2002 Toyota Sienna LE

VIN 4T3ZF13C42
Engine3.0 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)
Message Closed w/Summary

car Vehicle Data

2002 Toyota Sienna LE

VIN 4T3ZF13C42
Engine3.0 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)