Bulletin #: 2206.1

Advanced Technical Information

Part ID: 1908

1

982 – Radiator Fans Intermittently Inoperative
Vehicles Affected
Models

Model Year

Model Type

VIN Range

Vehicle-Specific Equipment

718

2022

Cayman GTS 4.0 (982140)

N/A

N/A

718

2022

Boxster GTS 4.0 (982340)

N/A

N/A

718

2022

Boxster 25 Years (982370)

N/A

N/A

718

2022

Spyder (982510)

N/A

N/A

718

2022

Cayman GT4 (982810)

N/A

N/A

Revision History
Revision

Release Date

Changes

0

March 7, 2022

Original document

1

August 18, 2022

Update of content

Condition
The customer complains of a check engine light, or a lack of cold Air Conditioning, or possibly both. The workshop
finds the following fault codes stored in the DME:
•
P2D8900 – Radiator fan 1 (left), power supply
•
P2D8C00 – Radiator fan 2 (right), power supply
The fault codes may be stored simultaneously.

Technical Background
Under certain conditions, the presence of these fault codes is a known software issue that Porsche are actively
investigating.
It is possible that the aforementioned fault codes set by rapidly starting the engine upon entering the vehicle (i.e.,
quick switch from key off --> engine on).

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Bulletin #: 2206.1

Advanced Technical Information

Part ID: 1908

1

Service Information
If a check engine light is present or intermittently present, please perform the following steps to determine the root
cause:
1.
Connect the vehicle to a suitable battery charger and complete a VAL.
2.
Open the VAL in PCSS and verify that no other faults are present in the DME.
3.
Open the detailed fault information for the above mentioned fault codes.
4.
Check the three indicated values in Figure 1 below:

Figure 1 - Detailed Fault Information
•
Is Fault Status active or passive?

Active: The radiator fan(s) may be faulty. Please skip to Step 6 and verify via checks for
electrical faults.

Passive: Continue to next check
•
Is 11_Fault status – current test cycle active or passive?

Active: Continue to next check

Passive: The radiator fan(s) are not the cause of the check engine light. Please continue
with other diagnosis.

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Bulletin #: 2206.1

Advanced Technical Information

Part ID: 1908

1

•
Is 13_Fault display in the instrument cluster on or off?

On: The faults were detected in two consecutive drive cycles and are the cause of the

check engine light. This condition is included in the software bug being investigated.

Off: The faults were not detected in the last two consecutive drive cycles, but were

detected at least once in previous drive cycles. If this value remains “off” but the fault

occurrence is greater than 1, these faults may have previously caused a check engine light.

Please investigate all other faults before determining these faults to be the cause of a
previous check engine light.
Additionally, the following steps may be performed to ensure proper operation of the radiator fans and Air
Conditioning system:
5.
Please verify there are no mechanical faults with the radiator fans.

•
Check for dirt, rocks, or other foreign objects that could block the operation of the radiator fans.

•
Operate the radiator fans via the Drive links functions in the PIWIS Tester.
Engine electronics (DME) → Drive links checks → Drive links → Radiator fan 1 (left)/Radiator
fan 2 (right)
6.
Please verify there are no electrical faults with the radiator fans.

Figure 2 - Ground Point Locations

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Bulletin #: 2206.1

Advanced Technical Information

•

•

•

•
7.
8.

Part ID: 1908

1

Visually inspect and clean ground point 20 (driver’s side lower kick panel area). This is the ground
point for terminal 85 at the fan relays.
Verify proper power and ground supply to the radiator fans.
Inspect the fuse for the radiator fan relays in the driver’s side fuse box (row D, fuse 6).
Verify proper tension in the PWM signal wire (Pin 3 at fan connectors).

Please verify the proper amount of refrigerant exists in the A/C system and inspect for leaks.
If no electrical or mechanical faults are found with the radiator fans, please ensure your PIWIS Tester is
updated to version 41.100.030 or later and perform automatic programming and coding of the DME.

NOTE: Due to the current semiconductor shortage, please do not replace the radiator fans, the DME, the
A/C control unit, or the A/C switch panel unless the parts are faulty.

Warranty
As always, be sure to document the repair completely in PCSS.
For this repair, please code the “cause” as follows:
Cause location:
19080
Electric fan
Cause symptom:
1111
Adjustment fault
Use the following troubleshooting labor operation:
03350053
On board diagnostic (Composite) VAL
24702550
DME control unit program
Additional labor operations may be claimed only as needed for replacing parts or for accessing ground points, fuses,
and connectors during diagnosis.

Search Items
Cayman, Boxster, GTS 4.0, radiator, fans, GT4, Spyder, 718, air conditioning, A/C, 25 year edition

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.

A15047
©2022 Porsche Cars North America, Inc.

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