majasturm3
Peugeot 5008 Active Hood Fault
Summary of the thread
A 2018 Peugeot 5008 displayed an "Active hood fault" message and an illuminated airbag warning lamp, with diagnostics indicating an issue with the active hood system and triggered spring actuators. The problem was suspected to be a defective acceleration sensor, which was confirmed by a workshop. The faulty sensor was replaced, resolving the issue.
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4 comment(s)
majasturm3 (community.author)
Thanks for the quick reply. I haven't checked the wiring harness yet. Could a faulty impact sensor also cause the spring actuators to trigger? Or is it definite that if they have triggered, the acceleration sensor is faulty?
louistiger9
While a faulty impact sensor could contribute to the 'Active hood fault' message, the triggered actuators strongly suggest the acceleration sensor as the primary culprit. The system likely interprets the acceleration reading as a collision event. However, confirming with a proper diagnostic scan using Peugeot-specific software is advisable before sensor replacement to eliminate other potential causes. A workshop visit might be warranted.
majasturm3 (community.author)
Thanks for confirming my suspicions and suggesting the next steps. I appreciate the help. I went to the workshop; they confirmed that the acceleration sensor was defective. Repair cost 315€. All is working well again!
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PEUGEOT
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5008
louistiger9
The symptoms strongly suggest a problem within the active hood system's crash detection mechanism. Given that the actuators have triggered, it's unlikely to be a simple wiring issue. Have you checked the wiring harness and connectors leading to the acceleration sensors? Sometimes corrosion or damage there can cause spurious readings.