Got P023400 error

**Sloanie** · 12-07-2022, 05:46 PM

The other day I overtook some cars in the passing lane by putting my foot hard down and a few minutes later I get an error on my adaptive cruise control and the car started to slow down as the accelerator stopped working. I stopped on the side of the road and stopped the car then restarted it and the car was back to normal.

I did a scan via obdeleven and got two P023400 errors that are practically at the same time

I have a 2016 BiTDI 2.0 Passat

What things do I need to look at?

**Lucas_R** · 12-07-2022, 07:22 PM

That's a turbo overboost error, no doubt triggered from your full throttle overtake a few minutes prior. The 2.0bitdi's are quite complicated and crammed into the Passat's so unless you know what you are doing, you might want to leave this one to a mechanic to look into. The biturbo engines have so many sensors its insane. Its likely they will need to hook up their scan tool and read values from a range of different pressure sensors and the MAP sensors etc to see which one is playing up.

If your lucky, it may just be a one-off, and you could clear the errors and keep driving. But if the error comes back soon after then its obviously going to need attention.

**Sloanie** · 13-07-2022, 07:35 AM

It's only happened once before, just under a year ago. Since then and up to now I have done heaps of overtaking maneuvers with no issues.

**Lucas_R** · 13-07-2022, 09:15 AM

Id take a screenshot of the error(s) for future reference, clear them and keep driving. The error may not come back again for another year, who knows.

**Davidc** · 10-12-2023, 02:17 AM

Originally Posted by Lucas_R

Id take a screenshot of the error(s) for future reference, clear them and keep driving. The error may not come back again for another year, who knows.

I had the same problem. passat b8 biTdi, same symptoms, when I step on the gas, the epc light comes on and it loses power. diagnostics shows two errors P023400. help if you solved the problem