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GS - 3rd Gen (2006-2011) Discussion about the 2006+ model GS300, GS350, GS430, GS450H and GS460

P0138 code...

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Old Nov 18, 2019 | 10:13 AM
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Default P0138 code...

Hi from Sweden! New to this forum

I started the car as usual and nothing was wrong with the car but when I was changing the seat position the check engine light came on and "Check VSC System" light up in the middle small screen.

I took my OBD2 reader and the code was "P1038" and from searching around its O2 Sensor Circuit High Voltage (Bank 1 Sensor 2). But the car doesn't feel unusual... Idle is fine, no smoke from the exhaust, no hesitation or misfire. I deleted the code and drove for around 10 minutes and no engine light or "Check VSC System" popped up. Turned off the car and on still no engine light. I checked if the code was stored and it wasn't.

Should I worry that the car may break? I've read that it can harm the engine if driving for a long period of time if the O2 Sensor is faulty.

Thanks in advance!
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Old Nov 18, 2019 | 12:01 PM
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sensor 2 is used to monitor oxygen in the exhaust after the catalytic. the ecm can tell when these sensors aren't working right if they aren't outputting what the ecm wants to see.

it comes down to either the sensor itself or the wiring, or the ecu is faulty.

the car won't break i've had 0138 and 0037 forever i dont care but its getting annoying i wanna see what VSC is like.
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Old Nov 18, 2019 | 12:05 PM
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Originally Posted by potatomon
sensor 2 is used to monitor oxygen in the exhaust after the catalytic. the ecm can tell when these sensors aren't working right if they aren't outputting what the ecm wants to see.

it comes down to either the sensor itself or the wiring, or the ecu is faulty.

the car won't break i've had 0138 and 0037 forever i dont care but its getting annoying i wanna see what VSC is like.
Alright, I need the car for tomorrow so I thought I'll just delete the code and if it is a serious problem the check engine light should come up again in a short period of time, if I'm correct?
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