P0456

DM-TL 0.5mm Leak.

P0456 - DM-TL very small leak (0.5mm).: Last occurrence - minimum signal

Possible causes:
1. Leak in fuel system vapour path.

1. Leak in fuel system vapour path.
- There is a fault with the leak detection system.
- A number of faults can occur with the leak detection system.

CLAMPED TUBE.
- Check electrical connections to the leak detection pump.
- Check the leak detection system for blocked tubes.
- Check that the leak detection pump is working correctly.

FUEL VAPOUR LEAKS.
- Check the fuel vapour paths for leaks.
- A small leak is between 0.5 mm and 1.0 mm diameter.
- A large leak is greater than 1.0 mm in diameter.