#1
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00 sentra check engine light po420 po430 how to test the cat?
hello my 00 sentra keeps bringing up these codes they were cleared and went away then a new code came up those were cleared and now the original codes are back . Does anyone know how to test a cat ? i saw a few people with problems with the computer needing to be reprogramed does anyone know if this is a common problem? The car seems to be running fine but wont pass smog becuase of the service engine light
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#2
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P0430
Catalyst System Efficiency Below Threshold (Bank 2) |
#3
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P0420
Catalyst System Efficiency Below Threshold (Bank 1) |
#4
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google the codes-- there are sites that explain what it could be, etc. most likely the o2 sensors or the cat. O2 sensors are cheaper.
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#5
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I should also mention i replaced both 02 sensors and then cleared the codes when they stayed off but their back again
Last edited by jlcbriscoe; 08-31-2012 at 01:24 PM. |
#6
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You should have 4 sensors not just 2!
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Tags |
cat, check, engine, light, po420, po430, sentra, test |
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