Difficult to cold start and p1023 fault code

[Simon Wood]

I have a 2009 Cayman S 987.2 owned it for a little over a year, great car.

 

In the last 2 months I have had increasing challenge cold starting the car. It is not battery as far as I can tell as I have the car on a trickle charger. It can take 3-4 cranks and lots of throttle to get the car started. It is fine warm starting, so if I drive to work then start the car a few hours later to drive home it starts first time.

 

I plugging in a bluetooth ODBII scanner and use Torque Pro and read out fault code p1023. From a little googling I can find some reports if high pressure fuel pump error on US forums.

 

What are peoples thoughts? Has anybody else seen this error and if so how did you fix it?

 

Also looking for recommendations of good independents Porsche specialists in Kent. The car has been back to Tonbridge Porsche once and the service was terrible. So I am now wanting to do the independent specialists route. Some have said Project Nine to me, but looking for confirmation they are good or other recommendations.

[Aaron]

The code is pretty self-explanatory - there was insufficient fuel pressure to start the car.  Pump is on its last legs or you have a leak somewhere.

 

The error means that investigation is required.  I don't think this will be as simple as changing the same part every time this code is generated.

 

You have the pump in the tank, the high pressure fuel pump, the fuel lines, the fuel rail, and finally the injectors.  I would start with checking the fuel pressure itself (not sure whether this can be read with a generic OBD scanner), then moving onto switching parts.  The likely culprits would be the HPFP or the pump in the tank, especially since the car drives OK.

 

Have you tried leaving the car on second ignition for a minute or two before attempting to start?  You should also hear the fuel pump spring into life when you hit second ignition.

[Mavrik]

I concur! 😆

[SarlechS]

I spoke to a friend of mine who's not too far from you, he said either Project Nine or La Rose are your best bets. I'd give them a call and see who you like more