P0421 Audi
P0421 code meaning, symptoms, causes & fixing P0016 audi a4 2.0t Please help -p0421 code
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P0421 code audi a4 2002, 2.0 fsiP0421 – warm up catalytic converter bank 1 efficiency below threshold Audi cel coil packs 0l symptoms a4 issues 2003 engine time2003 audi a4 3.0l issues. cel. p0421 w/ engine symptoms. time for new.
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Ford Oxygen Sensor Bank 1
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Ford Trouble Code P0430
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P0016 Audi A4 2.0t
Check Engine Light on with Code P0421, How Do I Fix It?