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What if the check engine light on your 2002 Toyota Highlander V6 4wd turned on What if the code was P0136 Which O2 sensor is this?
Wiki User
∙ 14y ago
This refers to the second oxygen sensor on Bank 1. Bank 1 is the same side of the engine that cylinder 1 is on, the very front cylinder on the drivers side. It could need to be replaced, or there could be a short to voltage on the O2 signal circuit, or it could also be that the connector has been corroded, and needs to just be cleaned. I believe this code is the same for all vehicles, not just Toyotas.
Wiki User
∙ 14y ago
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