O2 sensors covered in emissions warrantee
Thread Starter
Senior Member
Joined: Sep 2007
Posts: 368
Likes: 11
From: Iowa
2019 S450
O2 sensors covered in emissions warrantee
Just had 2 o2 sensors replaced and dealer says not covered under emmissions warrantee. My owners manual says they are part of the emission system so I think they should be under the 80K 8yr fed. emissions warrantee does anyone have any reference that I can use to back it up?
Thread Starter
Senior Member
Joined: Sep 2007
Posts: 368
Likes: 11
From: Iowa
2019 S450
I didnt get a warrantee book as it was used car. That is not the answer I wanted to hear..as the O2 sensors are to monitor the condition of the Cats I hoped they were also covered..
MBWorld Fanatic!
Joined: Mar 2006
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From: San Jose area
'19 E63S sedan
A stricter law, in effect in CA, MA, and VT, covers the O2 sensor for 3 years or 50,000 miles. As a maintenance component, federal law only covers the O2 sensor for 2 years or 24,000 miles.
MBWorld Fanatic!
Joined: Nov 2001
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From: Philadelphia area
2010 ML550, 2010 E350 4M, 1966 Corvette Convt C2
O2 sensors are consumables and should be replaced when they fail or trigger a check engine light. This is usually well before 80,000 miles. Cats are also consumables but normally last well beyond the 80000 mile mark. Cat failure is in many cases caused by the owner/operator using improper fuel or by not changing the O2 sensors when failed causing a very rich mixture and raw gas in the exhaust.
MBWorld Fanatic!
Joined: Nov 2001
Posts: 4,260
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From: Philadelphia area
2010 ML550, 2010 E350 4M, 1966 Corvette Convt C2
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Thread Starter
Senior Member
Joined: Sep 2007
Posts: 368
Likes: 11
From: Iowa
2019 S450
If I read this right on this link the Fed. Epa warantee should cover the o2 sensors under the 80,000 8yrs warrantee.
http://www.epa.gov/otaq/consumer/warr95fs.txt
http://www.epa.gov/otaq/consumer/warr95fs.txt
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