Transmission fault light after battery change… what’s going on?

I recently replaced the battery on my 2014 Escape Titanium, but now the transmission fault light keeps coming on. I took it to a mechanic who thought he fixed the issue, but the light is still showing up.

For context, I had the transmission replaced about 30,000 miles ago. Now the check engine light has started coming on as well.

Does anyone have ideas on what could be causing this?

Is the car showing any codes? I’d also recommend having the transmission fluid level checked.

Atlas said:
Is the car showing any codes? I’d also recommend having the transmission fluid level checked.

After the mechanic ‘fixed it,’ now the check engine light is coming on too. It’s starting to worry me.

Do you know what the code is yet?

Hayes said:
Do you know what the code is yet?

Not yet—it just came on last night. I’ll have to get it scanned.