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laraghost5

Sonic fault memory lock

I've got a 2014 Chevrolet Sonic diesel with an active fault memory lock. My OBD2 scanner is showing an error stored in the error memory. Anyone seen this before? Mileage is 94462 km.

Summary of the thread

A 2014 Chevrolet Sonic diesel had an active fault memory lock, with an error stored in the error memory. The issue was identified as an undervoltage problem caused by a dying battery. Replacing the battery resolved the fault memory lock.

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4 comment(s)

lilly_mueller3

Yo, that sounds like a PITA. I had something similar happen with my old Peugeot, though it was petrol, not diesel. Turned out to be some undervoltage issue messing with the car's brain. Did you check your battery lately?

laraghost5 (community.author)

When you mention undervoltage, could you elaborate on what specifically caused the problem in your Peugeot? I'm trying to narrow down the potential causes before taking it to a professional.

lilly_mueller3

Sure thing! Basically, the battery was on its last legs. It was still starting the car, but apparently, the voltage was dipping low enough to throw a hissy fit with the car's computer. Honestly, just take it to a workshop; they'll sort it out faster than you chasing ghosts.

laraghost5 (community.author)

I appreciate the advice! I took it to the workshop, and you were spot on. Turns out it was undervoltage due to a dying battery. The repair, including a new battery and diagnostics, came to 240€. Thanks again for pointing me in the right direction!

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CHEVROLET

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SONIC