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Fault code DIAG -1 (ECU with Chip)

Joined Sep 2008
15 Posts | 0+
Right Chaps!

Need your help here!

I've just recently fitted the race air kit, with a chip to match, however, once reconnected the ECU, The fuel pump dose not engage! and the EFI display flashes then produces a DIAG -1 message!

Being luckily enough to have two Mille R's I swapped the other ECU over to test! and sure enough the fuel pump fired up no problem.

The question is.....Have I done the ECU a nasty, while changing the chip?
I even reinstalled the original chip...still with the same problem?

Anyhow hope you lads are all well.

Many Thanks

Martin
 
Oh deary me that doesn't sound good. Did you prize the chip out or use a chip puller :dunno Have you checked the ecu for any damage if you did prize it out :dunno
 
chip is either duff (quite possibly if it came from ebay) or in the wrong way round.
 
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