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failed test, 2000 contour
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buschman
New User
Mar 10, 2008, 12:21 PM
Post #1 of 2
(1702 views)
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failed test, 2000 contour
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failure code po420 obd11 what and were is it? thanks
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Indytech
User
Mar 12, 2008, 7:30 PM
Post #2 of 2
(1686 views)
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Re: failed test, 2000 contour
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DTC P0420 indicates bank one catalyst system efficiency is below acceptable threshold.
DTC P0430 indicates bank 2 catalyst system efficiency is below acceptable threshold. Possible causes are:
1 Use Of Leaded Fuel
2 Faulty HO2S
3 Faulty ECT Sensor
4 High Fuel Pressure
5 Damaged Exhaust System Component
6 Oil Contamination
7 Cylinder Misfire
8 Downstream HO2S Sensor Improperly Connected
9 Retarded Spark Timing
Hope this helps you out
Indy
,
http://www.flatratetech.com
staff tech
Indy Shop owner
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