P0150 Error Code O2 Sensor
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Thread Starter
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Joined: Feb 2010
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C43
P0150 Error Code O2 Sensor
CEL comes and goes from time to time. Scanned it and found 1 stored code showing P0150 which is the O2 Sensor Cicuit Bank 2 Sensor 1. So I'm planning to replace the sensor and hopefully that fixes it. I just wanted to check and see if I should replace all 4 sensors at once. And where is the best place to buy the sensors?
Thanks.
Thanks.
MBWorld Fanatic!
Joined: Apr 2005
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From: SCV SoCal
2002 CLK430
When I thought they were due, I replaced all 4. The primary (front) sensors are the only ones that impact drivability. The rear two are only used to check the condition of the catalytic converter. If I were you, I’d replace the front two. "IF" you get the right Bosch direct fit sensors, they should be fine. If you buy the universal sensors, I hope they work better than mine did. RockAuto has them, and they have a very good return policy.
Thread Starter
Junior Member
Joined: Feb 2010
Posts: 19
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C43
When I thought they were due, I replaced all 4. The primary (front) sensors are the only ones that impact drivability. The rear two are only used to check the condition of the catalytic converter. If I were you, I’d replace the front two. "IF" you get the right Bosch direct fit sensors, they should be fine. If you buy the universal sensors, I hope they work better than mine did. RockAuto has them, and they have a very good return policy.
So Bank 1 & 2 are the left and right, and Sensor 1 & 2 are front (upstream of cat, pre-cat) and rear (downstream of cat, post-cat), correct? The Bosch description refers to upstream left/right and downstream left/right. But is left being the driver side and right being the passenger side, or vice-versa?
On the Bosch direct fit ones, are the connector different for each? So, one cant really mess up, right?
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Joined: Dec 2009
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From: Chapel Hill, NC/Montreal, QC
1995 C36 AMG, 1998 C43 AMG
Thanks for the quick reply.
So Bank 1 & 2 are the left and right, and Sensor 1 & 2 are front (upstream of cat, pre-cat) and rear (downstream of cat, post-cat), correct? The Bosch description refers to upstream left/right and downstream left/right. But is left being the driver side and right being the passenger side, or vice-versa?
On the Bosch direct fit ones, are the connector different for each? So, one cant really mess up, right?
So Bank 1 & 2 are the left and right, and Sensor 1 & 2 are front (upstream of cat, pre-cat) and rear (downstream of cat, post-cat), correct? The Bosch description refers to upstream left/right and downstream left/right. But is left being the driver side and right being the passenger side, or vice-versa?
On the Bosch direct fit ones, are the connector different for each? So, one cant really mess up, right?
