Hello everyone,
I have a 2011 VW Jetta, 1.6 TDI, 105 HP, which occasionally goes into limp mode as soon as I turn the ignition on. This happens before the engine is started. If I start the engine, switch it off, and then restart it, the error disappears. I should mention that this fault has never occurred under load or while driving.
The diagnostic tool shows the following fault code:
P023600 - Turbocharger Boost Sensor
At first, the fault appeared only rarely, about once every three months. Recently, however, it has started occurring more and more often, which is why I began looking into it.
From what I have read, when the ignition is switched on, the ECU performs an initialization procedure. It seems that sometimes my sensor reports a pressure value higher than atmospheric pressure during this process. For this reason, I replaced only the sensor, but the fault did not disappear.
I then took the car to a mechanic, and the following work was carried out in several stages:
- EGR and DPF cleaning. The fault remained.
- Turbocharger cleaning. The fault disappeared for about three weeks, but then started occurring again.
So my question is: has anyone else experienced this fault? If so, how did you solve it?
Thanks in advance!