Check Engine LIght With Code P0135, P0141, P0155, or P0161 on Lexus GS300

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: 133,668 (62,500–229,000)
10 model years affected: 1994, 1998, 1999, 2000, more2001, 2002, 2003, 2004, 2005, 2006
40 people reported this problem
12 people shared problem details
1998 Lexus GS300100,000
check engine light on. Replace the o2 sensor...still the light stays on.
2004 Lexus GS300123,000
I was told Bank 1 sensor 2 O2 sensor has heating circuit defective. Error code P0037 and P0136 I replaced the sensor, I disconnected the battery for about two minutes, but the error code and engine light did come back. What can be wrong? I know that the sensor I used was working sensor. The sensor I used was a NTK make.
2000 Lexus GS300120,000
Check engine light came on after refueling, then driving for 40 miles. OBD-II reader shows P0141.
1999 Lexus GS300129,445
check engine codes p0161 and c1242. any ideas on problem
2002 Lexus GS300101,000
the O2 sensor was replaced
2000 Lexus GS300142,200
Check engine light came on. OBDII Code: P0155 Replaced the O2 sensor for the heater circuit. Reset 'Check Engine' light. All is Good!!
2004 Lexus GS300110,256
Vsc and check engine light on. Advanced auto said bad o2 sensor.
1994 Lexus GS300225,000
Check engine light goes on time to time for a long periods of time. The goes a way for long periods of time. I checked light everytime and shows up the same code
2002 Lexus GS30098,340
Diagnosed as a PO 141 02 heater B1S2. Not yet fixed.
2002 Lexus GS300120,000
Took it in and it was the O2 sensor.... never replaced it and it's been about 2 or more years. Car still runs without a hitch. I just ignore the light.
1998 Lexus GS300200,000
All of my 02 sensors are bad.
1999 Lexus GS30098,000
check engine light came on. code P0155, just had oil change.
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