P1663 Fault Code

[dbc]

Hi Guys - I've done plenty of searching but not had any luck...MKII 2.3

 

Engine Management Light is on and giving Fault P1663. When Searching I am getting conflicting results as to what this code means.

 

1 = P1663 Fuel demand command signal circuit malfunction

2 = P1663 KAM (Keep Alive Memory) Power lost/low

 

Initially when driving today the light came on, I lost all drive, the rev counter went to zero. But when I depressed the clutch it all cleared and the car felt OK. This happended 5-6 times during a long journey but I managed to get there.

 

When I started the car to return, it fired up no problem but as soon as I touched the throttle the engine cut out. After this it would not turn over. All the controls worked and the dash lights were on but it was as if the battery was totally flat.

 

I Checked all the fused and reseated all the Relays and the car started again. Only now I have an engine management light on giving P1663. It doesn't come on immediately, it takes about 10 seconds but it does come on every time.

 

Strangly the car now appears to drive perfectly OK although I drove home at max 60mph and took it really steady so not sure if its OK under load.

 

Any help gratefully received.

 

Thanks

[sparky Paul]

I think FDCS is on diesel engines, so it could be the other option of power failure issues.

 

The common Galaxy power relay problems often allow the engine to crank, but not start. As you have been unable to turn the engine over, and you will probably have the auxiliary fusebox near to the battery, I would be checking that first for bad connections.