Can anyone tell me what speed the car will go when in limp-mode?

Also, is it normal for the throttle pedal to not work at all when in limp-mode? ie. Zero revs.

The reason I am asking is on several occasions, I thought my car was going into limp-mode.

But most of the time there were no error-codes on the ECU even when the dealer did a diagnostic check.

When the problem occurred, if I put the car in first gear and let the clutch out the car would move at 5mph only but the throttle-pedal did not work at all. I can usually fix the issue by switching the ignition off, lock the car, then unlock it and then it will start up and drive normally.

But on one occasion only, I found an ECU error-code 112052 which relates to the throttle-pedal.

There was also an ECU 38008 error-code which relates to the glow-plug.

So is it possible that the fault lies with the throttle-pedal and is not an exhaust DPF / DGR issue at all?

Thanks in advance for any responses.