Problem:

Solutions:
- The symptoms you describe are common on all Polo (6R1) models and the cause is a poor connection between the Engine Earth Lead and chassis earth point due to corrosion.
- Check for corrosion between the engine Earth Lead and chassis earth point. Replace component(s) as necessary.
- Fit a new earth lead stud on the engine mounting and tighten the stud to the correct torque setting. Check the vehicle starts and erase all fault codes.

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