Subjects>Auto>European Cars

How many o2 sensor on a 04 Audi a4?

Anonymous

∙ 13y ago

Updated: 8/10/2025

The 2004 Audi A4 typically has four oxygen sensors: two upstream (pre-catalytic converter) and two downstream (post-catalytic converter). The upstream sensors monitor the air-fuel mixture, while the downstream sensors check the efficiency of the catalytic converters. However, the exact number may vary depending on the specific engine configuration.

AnswerBot

∙ 1mo ago

What else can I help you with?

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its incorporated into the maf sensor.

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Where is the answer

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Inside the airbox.

How many valves does the 2003 Audi A4 have?

The 2003 Audi A4 has 20 valves.

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The 2010 Audi A4 has 16 valves.

How many valves does the 2009 Audi A4 have?

The 2009 Audi A4 has 16 valves.

How many valves does the 2011 Audi A4 have?

The 2011 Audi A4 has 16 valves.

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The 2001 Audi A4 has 20 valves.

How many valves does the 2012 Audi A4 have?

The 2012 Audi A4 has 16 valves.

How many valves does the 2005 Audi A4 have?

The 2005 Audi A4 has 20 valves.

How many valves does the 2014 Audi A4 have?

The 2014 Audi A4 has 16 valves.

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