Engine shuts off at highwhay speeds (And at random times).

[joosee_]

Hi everyone,

I’m having an issue with my VW Polo 6n2 (2001) with the 1.4 16v engine (Engine code: AUA).

The Symptoms are the following: While driving at 120 km/h (approx. 75 mph), the engine suddenly cuts out completely. Even though the car is in gear and moving, the RPM needle drops instantly to 0.

What I do to keep going is shifting into neutral while driving, turn the ignition key back on, and shift back into 5th gear. With this the engine turns on as if nothing happened.

This doesn't just happen on the highway. The engine also randomly cuts out at idle or when driving at low speeds around town.

The Check Engine Light is also permanently on usually with 2 codes:

- P0130: O2 Sensor Circuit Malfunction (Bank 1, Sensor 1)

- P0171: System Too Lean (Bank 1)

I have changed the intake throttle, o2 sensors and EGR. (I cant get to do EGR calibration, it doesn't work).

Has anyone experienced anything similar on another Polo? I would heavily appreciate any guidance or advise about how to fix this issue.

Thanks in advance!