Help please: P1026, P053f
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Help please: P1026, P053f
Hi, past week, my 958.1 Cayenne Turbo is taking longer to crank after sitting for a few days. Yesterday, a red warning light "Engine Power Reduced" came on for a few seconds and then cycled off.
I scanned my car and it came up with 2 codes:
P1026
P053f
I think this is essentially the high fuel pressure pump, but before I go out and buy one, just double checking with any others who have had the same issue.
Thanks in advance
NW
Last edited by NWturbo; Apr 11, 2018 at 04:34 PM.
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Joined: Dec 2010
Posts: 426
From: Simi Valley,CA
Rep Power: 34
How many miles? I have a 958.1TT also, however not a mechanic, a quick search states to connect a mechanical fuel gauge to each of the fuel rails to verify the pressure.
There is a replacement write up over at rennslist if you go the DIY route.
Keep us posted
There is a replacement write up over at rennslist if you go the DIY route.
Keep us posted
Last edited by jayi836; Apr 11, 2018 at 05:34 PM.
Before throwing a HPFP for $1400+ at it.. it's worth checking if the low-pressure side is providing adequate pressure for the HPFP to work correctly. If you have a Porsche diagnostics tool, you can measure the pressure in the high-pressure side of the circuit, there is a built in pressure sensor that can be read out. To test the low-pressure side requires a fuel pressure gauge, and some work connecting it.
The specifications for both can be found on the AllDataDIY website (subscription) along with detailed instructions for the low-pressure side. An aftermarket tool such as Durametric and iCarScan should also be capable of reading the high-pressure sensor output (although I haven't tried it with either of them..) The Porsche PIWIS is the tool the dealer would use to do that.
On AllDataDIY - follow this path: Vehicle » Powertrain Management » Fuel Delivery and Air Induction. There is LOTS of detailed information there.
The high-pressure pump DIY can be found at: https://rennlist.com/forums/cayenne-...placement.html
The specifications for both can be found on the AllDataDIY website (subscription) along with detailed instructions for the low-pressure side. An aftermarket tool such as Durametric and iCarScan should also be capable of reading the high-pressure sensor output (although I haven't tried it with either of them..) The Porsche PIWIS is the tool the dealer would use to do that.
On AllDataDIY - follow this path: Vehicle » Powertrain Management » Fuel Delivery and Air Induction. There is LOTS of detailed information there.
The high-pressure pump DIY can be found at: https://rennlist.com/forums/cayenne-...placement.html
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