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: 111,525 (68,000–151,000)
6 model years affected: 2001, 2002, 2003, 2004, more2005, 2006
18 people reported this problem
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problem details
2006 Lexus LS430 150,000 mi,
oxygen sensor failure/chkvsc/chkengine lites on
2001 Lexus LS430 134,500 mi,
my check engine light came on-care is running fine, it seems..what could this be?
2002 Lexus LS430 91,000 mi,
The o2 sensor light kept coming on and it had to be replaced.
2006 Lexus LS430 74,000 mi,
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 LS430 68,000 mi,
same problem
check engine light on code po155 replaced by lexus at £179