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Old Jan 20, 2012 | 04:04 PM
  #1  
A4driver17's Avatar
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Default engine light codes

I got these codes and I don't understand what these codes are.

P1409 tank vent valve circuit electrical malfunction.
P1400 egr valve circuit electrical malfunction.
P0161 o2 sensor circuit bank 2 sensor 2.
P0141 o2 sensor heater circuit bank 1 sensor 2.
P0155 o2 sensor bank 2 sensor 1.
P0135 o2 sensor circuit bank 1 sensor 1
If you can help thank you!
 
Old Jan 20, 2012 | 04:07 PM
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RomanNY's Avatar
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Both of your 02 sensors are most likely bad and will need to be replaced. Check the wiring for them if its not damaged. All of the codes are relating to something electrical so check your wiring
 
Old Jan 20, 2012 | 06:08 PM
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What wiring should I check o.O
 
Old Jan 20, 2012 | 06:16 PM
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You mean all four, not both. His car has four of them (two per bank, two banks, hence a V6). Clear the codes and drive awhile before rescanning. Active failures will set codes again. Any that don't come back are old or ghosts. Ignore them, and troubleshoot any that come back.
 
Old Jan 20, 2012 | 09:23 PM
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Same codes came back. All 6 of them
 
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