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matswolf89

Peugeot 4007 AC and Temperature Sensor Issue

My 2012 Peugeot 4007 (gasoline engine) has a defective heat exchanger temperature sensor, confirmed by error codes, and the AC won't engage. Could these be related?

4 comment(s)

matthias_schroeder1

Sounds like a headache. Is the engine overheating? Maybe a coolant leak? Have you checked the AC and engine cooling system fuses?

matswolf89 (Author)

No overheating, fuses are intact, coolant is fine. Could the AC control unit cause these issues?

matthias_schroeder1

A failing AC control unit can throw things off. Given the sensor issue and AC problem, and ruling out the basics, I'd say it's highly suspect. Time to visit a workshop.

matswolf89 (Author)

Diagnosis confirmed the AC control unit was the problem. Replacement and sensor calibration cost 980€. Thanks for the help.

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