alexander_swift39

i40 Solar Sensor Fault

I've got a 2013 Hyundai i40, diesel engine, with about 194k on the clock. Getting a 'solar sensor fault' stored in the error memory and the heating output is seriously underperforming. Suspect it might be a dodgy cable or plug to the sensor. Anyone encountered something similar? Is it DIY-able or am I looking at a trip to the shop?

A 2013 Hyundai i40 with a diesel engine exhibited a 'solar sensor fault' and poor heating performance. The issue was suspected to be due to a faulty cable or plug connected to the sensor. It was advised to check the sensor and wiring for damage or corrosion. Ultimately, a corroded connector on the solar sensor was identified as the cause, and the problem was resolved at a workshop.

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4 comment(s)

I had something similar in my Hyundai i40, though I can't recall the exact year. Have you checked the sensor itself for any visible damage or corrosion? A faulty temperature sensor can definitely throw off the HVAC system's performance. I'd advise checking the wiring and connector first.

Cheers for the quick response! So, when you say 'similar', was it the exact same solar sensor fault code? Did it manifest with the same low heating output? And did you manage to fix it yourself or did you need professional help?

Correct, it was the identical solar sensor fault, resulting in reduced heating efficiency. Unfortunately, I was unable to resolve the problem on my own. I recommend that you visit the workshop.

Thanks for the heads-up! I took it into the shop as suggested. Turns out it was a corroded connector on the solar sensor, just as we suspected. 95€ later, all sorted!

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HYUNDAI

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I40