Check Engine LIght With Code P0135, P0141, P0155, or P0161 on Lexus LS430

The Check Engine Light may illuminate due to an O2 sensor heater fault. Most commonly the affected O2 sensor will need to be replaced to correct this concern.

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Average mileage: 110,678 (68,000–151,000)
6 model years affected: 2001, 2002, 2003, 2004, more2005, 2006
17 people reported this problem
7 people shared problem details
2001 Lexus LS430134,500
my check engine light came on-care is running fine, it seems..what could this be?
2002 Lexus LS43091,000
The o2 sensor light kept coming on and it had to be replaced.
2006 Lexus LS430150,000
oxygen sensor failure/chkvsc/chkengine lites on
2006 Lexus LS43074,000
The check eingine light came on an I had it serviced at the Lexus dealership. I was told it was an o2 sensor. Cost of repair $450.
My check engine light has been on for this problem for over a year. I haven't gotten it repaired yet.
2002 Lexus LS43068,000
same problem
check engine light on code po155 replaced by lexus at £179
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