No. 134-18

Symptom-based workshop manual
Service
134/18 ENU
1001
1
Symptom - Engine - Engine Problems and Engine Noise: Also Replacing Ignition Coils (SY
134/18)
Model Line:
911 (991)
Boxster (981)/Cayman (981)
Model Year:
As of 2014 up to 2016
Subject:
Ignition coil
Symptom:
Customers complain about engine problems or loud engine noise. The following fault memory entries
may also be stored:
•
•
•
•
•
•
P0301 - Misfire
P0302 - Misfire
P0303 - Misfire
P0304 - Misfire
P0305 - Misfire
P0306 - Misfire
Cause:
Defective diodes in the ignition coil (for switch-on spark suppression) can cause engine problems.
Remedial
Action:
In the event of a customer complaint,check the cylinder liner for damage. In the event of replacing
the short block, install new coils at the same time. All ignition coils must be replaced in addition
to the damaged components, see  Workshop Manual '282020 Removing and installing ignition
coils'.
Date of
Introduction:
Modified ignition coils have been used during production since 05 February 2016.
Parts Info:
Information
The following points must be observed in relation to the part numbers listed below and the
relevant vehicle (depending on equipment):
•
Part number indexes will increase over time. Before performing repairs, cross reference with
PET (Porsche Spare Parts Catalog), for newer parts (higher index).
•
PET must be checked to determine if additional components are needed.
•
Particular/modified components, whose part numbers are listed accordingly, are required for
the remedial action.
9A1.602.104.07 – NEW –  Ignition coil (required: all six)
AfterSales
Jan 19, 2021
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1
Service
1001
Invoicing:
ENU
Symptom-based workshop manual
134/18
The work involved is invoiced under the labor operation:
I No.
APOS
Labor operation
28202006
Removing and installing ignition coils
For invoicing and documentation using PQIS, enter the following coding:
Location (FES5)
10010
Engine
Damage type (SA4)
1713
seized
References:
 Workshop Manual '282020 Removing and installing ignition coils'
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.
© 2021 Porsche Cars North America, Inc.
Jan 19, 2021
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AfterSales