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emilia_herrmann5

Venza control module communication error

My 2022 Toyota Venza with a gasoline engine is throwing weird codes. 75678 km on the clock. The check engine light is on, the engine overheats, and I found coolant spilled under the car. My OBD scanner says something about a control unit communication error. I'm suspecting a bad connection, maybe a faulty cable or plug. Anyone seen this before?

4 comment(s)

mika_wolf81

I had something similar with my Venza. Check the data link connector and the CAN bus wiring. Could be a connectivity issue messing with everything. Is the error code related to the control module?

emilia_herrmann5 (Author)

Yeah, the error code does point to the control module. Where exactly should I be looking for the data link connector and CAN bus wiring? Any specific areas prone to issues?

mika_wolf81

I'm not a mechanic, but my issue was similar, and it ended up being a corroded connector causing intermittent communication. I'd recommend taking it to a trusted shop so they can pinpoint it exactly. Saved me a lot of guesswork and potential damage.

emilia_herrmann5 (Author)

Thanks, that's helpful! Took it to a local shop, and you were spot on. Turns out it was a corroded connector on the CAN bus, just like you said. Cost me 95€ to get it fixed. Runs like a champ now!

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