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Peugeot 4007 Overheating and Control Unit Error

Hi. My 2007 Peugeot 4007, diesel engine, is showing some concerning symptoms at 173534 km. The engine overheats, the check engine light is on, and I'm seeing coolant spills, likely from over-pressurization. Diagnostics point to a control unit communication error, possibly a wiring issue. Has anyone encountered similar problems?

A 2007 Peugeot 4007 is experiencing engine overheating, a check engine light, and coolant spills, likely due to over-pressurization. Diagnostics suggest a control unit communication error, possibly caused by a wiring issue. A similar problem was resolved by replacing a defective plug connection, which fixed the issue.

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4 comment(s)

Good day. I own a Peugeot 4007 too, but not the same year. I experienced similar issues, though overheating was not present. Error codes indicated a control unit problem and the check engine light illuminated. Has your mechanic checked the data link connector?

Thanks for the quick response. No, I haven't specifically checked the data link connector yet. Do you recall the specific error code you were getting, or any other details about how the mechanic solved the issue?

I'm afraid I do not recall the specific error code. I would strongly advise consulting your workshop to allow specialized troubleshooting. If the cables and connection plugs aren't the cause, it could be a software glitch.

Thanks. I appreciate the advice. It turned out to be a defective plug connection, as suspected. Replaced it for 95€ and everything seems fine now.

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PEUGEOT

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4007