No. 2306

Bulletin #: 2306
Advanced Technical Information
Part ID: 1725
1
95B.III – Macan In-Line 4 Cylinder Engine-DME Fault P25AC00/00426A
Vehicles Affected
Models
Model Year
Model Type
VIN Range
Vehicle-Specific Equipment
Macan
As of 2022
95BAU1, 95BAN1
n/a
R4 engine
Revision History
Revision
Release Date
Changes
0
March 23, 2023
Original document
Condition
Check Engine light due to fault code “P25AC00/00426A Oil pressure switch – signal implausible.”
Technical Background
Swarf/debris from manufacture can prompt the aforementioned failure entry. This error is arguably misleading due
to the fault description citing an oil pressure switch. Analysis shows swarf actually binds the control valve for the
piston spray nozzles, not necessarily an oil switch, initially. In fact, the part to replace at the onset of this fault is
correctly cited in Guided Fault Finding (GFF), albeit the present GFF for this fault is confusing. If there is visible
evidence of scoring or otherwise damage to the control valve, then it’s very likely the issue caused by swarf/debris
which lead to the fault.
Service Information
Please diagnose the aforementioned fault in accordance with this ATI until the existing instructions in Guided Fault 		
Finding (GFF) releases.
1.
Remove and replace the Oil Pressure Control Valve for Piston Cooling (9A7115243A) according to WM 		
		
172519 (highlighted blue in Figure 1 below for 2022+ R4 Evo engines, shown as location 6 in Figure 2 for
		
pre 2022 R4 engines). Please also clean any excess debris around the valve’s mating surfaces and galleys.
2.
Perform an oil and filter change
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Bulletin #: 2306
Advanced Technical Information
3.
		
4.
		
Part ID: 1725
1
If there are no permanent damages to the internal oil channels of the oil filter housing, clear fault and road 		
test with new valve.
If the issue persists, replace the two oil pressure switches (PAC919081 and 958919081120) in positions 		
4 and 5 of Figure 2, or alternatively positions 17 and 18 from Figure 3.
Figure 1:
Installation position of control valve 9A7.115.243.A on R4 Evo with
intake manifold removed from WM 172519.
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Bulletin #: 2306
Advanced Technical Information
Part ID: 1725
1
Figure 2:
GFF diagram with locations of relevant oil circuit components for pre2022 R4 engine.
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Bulletin #: 2306
Advanced Technical Information
Part ID: 1725
1
Figure 3:
View of oil pressure switches PAC919081 and 958919081120 at
locations 17 and 18 in PET illustration.
Warranty
As always, please document the repair completely in PQIS.
For this repair, please code the “cause” as follows:
Cause location:
17250 Piston spray nozzle
Cause symptom:
1613 No function occasionally
Search Items
Macan, Macan T, oil pressure, R4, R4 Evo, 95B II, 95B III, P25AC00/00426A Oil pressure switch – signal implausible
Important Notice: Technical Bulletins issued by Porsche Cars North America, Inc. are intended only for use by professional automotive technicians who have attended Porsche service training courses. They are
written to inform those technicians of conditions that may occur on some Porsche vehicles, or to provide information that could assist in the proper servicing of a vehicle. Porsche special tools may be necessary in
order to perform certain operations identified in these bulletins. Use of tools and procedures other than those Porsche recommends in these bulletins may be detrimental to the safe operation of your vehicle, and
may endanger the people working on it. Properly trained Porsche technicians have the equipment, tools, safety instructions, and know-how to do the job properly and safely. Part numbers listed in these bulletins
are for reference only. The work procedures updated electronically in the Porsche PIWIS diagnostic and testing device take precedence and, in the event of a discrepancy, the work procedures in the PIWIS Tester
are the ones that must be followed.
A14911
©2023 Porsche Cars North America, Inc.
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