Thread: Transient Power interruptions - D4 HSE

Yes. The car will not accelerate if you also press the brake. It will also log a fault code for it! I tried it once for a laugh.
It doesn’t sound like the OP’s issues though you never know

An incorrect EGR valve position would log a fault, as should a faulty TPS because the TPS has multiple tracks for cross-checking the pedal position. A temporary loss of the crankshaft position sensor output wont normally log a fault (known cases) although why it can be overcome with throttle movement might take some close inspection of wiring harnesses for chafing to resolve. Logging live values is the key.

Edit: I knew of a TDV6 D3 whose engine would stop if reversing at other than idle. I suspected a broken wire or bad connection to the crankshaft position sensor but neither the owner nor I had the time to properly investigate. Getting stuck ascending a sand dune meant a snatch was required!