Technical Bulletin
Model(s)

Year

Passat, Passat
Wagon

2004-2005

Golf, Jetta (A4)

2004-2006

New Beetle,
New Beetle
Convertible

2004-2005

Eos, GTI,Jetta,
Passat

2006-2009

Jetta, GTI,
Eos, Tiguan,
Beetle, Beetle
Convertible,
CC, Passat

2009-2013

Eng. Code
1.8L
(AWM)
1.8L
(AWM)
1.8L
(AWM,AWP,BNU,BKF)
2.0L
(BPY)

2.0L
(CCTA/CBFA)

Trans. Code

VIN Range
From

VIN Range To

All

All

All

All

All

All

All

All

All

All

All

All

All

All

All

Condition
01 13 10 March 15, 2013 2025089 Supersedes T.B. V010751 dated June 1, 2007 for revised diagnostic
assistance and additional model applicability.
Engine, Misfire Diagnostic Aid
The MIL is flashing or illuminated.
One or more of the following DTCs are stored:

DTC

Description

DTC P0300

Random/Multiple Cylinder Misfire Detected

DTC P0301 – P0304

Cyl.1 Misfire Detected - Cyl.4 Misfire Detected

Engine may also exhibit reduced performance without significant loss of power.

Page 1 of 4
© 2013 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other
intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice.
No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or
otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher.

Technical Bulletin
Technical Background
Replaced ignition coils have commonly been related to conditions such as:
• Incorrect installation of ignition coils
• Loose or damaged electrical connections
• Circuit grounds
• Poor fuel quality
• Reasons that may not be related to ignition coil operation.
A Proper GFF misfire diagnosis must be followed before replacing any ignition coils.

Production Solution
Not applicable

Service
Ensure all campaigns and applicable TSBs have been performed
• Due to multiple causes for engine misfire, please ensure all campaigns and applicable TSBs have been
performed.
• Repeat repairs must be carefully addressed to identify the root cause of the concern. Please utilize proper
diagnosis steps to ensure that the vehicle is repaired properly and that the concern has been identified,
repaired and verified.
• Obtain information from the customer
• To repair the vehicle correctly, obtain as much information as possible from the customer about the symptoms
of the condition and when it occurred.
•

In what situation (turning, etc.) does the condition occur?

• Under what environmental conditions (road conditions, weather, temperature, start conditions, etc. does the
condition occur?
• What is the operating situation of the vehicle (activated electrical equipment, gear selection, etc. when the
condition occurs?
• Can the complaint be reproduced?

Page 2 of 4
© 2013 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other
intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice.
No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or
otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher.

Technical Bulletin
Workshop procedure
1. Read out the data memory of engine control module, and note the environmental conditions on the DTC log.
a. If there are other entries in addition to combustion misfires, address the other entries before addressing the
cylinder misfires.
b. If DTC P0301 – P0304 (Cyl.1 Misfire Detected - Cyl.4 Misfire Detected) is accompanied by P1250 (Fuel level
too low), it is likely the faults occurred due to a low fuel level and not a malfunction from the coils.
c. Review all applicable TSBs related to cylinder misfires and ECM software improvements before diagnosing the
misfire condition. For example, if data shows that a DTC was set during cold start, search ElsaWeb for TSBs
related to cold start misfires.
2. Try to duplicate customer complaint based on the environmental conditions at the time the DTC was set. The
freeze-frame data gives important indicators for the traceability of the complaint, in particular if it occurs
sporadically or at cold start.
3. Review the vehicle repair history for previous misfire or maintenance service that could be related to the current
complaint.
4. Observe the requirements of Guided Fault Finding. Perform Guided Fault Finding in full, according to the
proposed sequence (test plan). DO NOT skip any steps.
5. Complete Guided Fault Finding correctly and set the readiness code.
Tip:
This is important to ensure that no subsequent faults occur due to the misfire.
6. In the case of single cylinder misfires:
a. Before replacing components, determine whether the misfire migrates to the other cylinders after exchanging
the coils. If necessary, perform a test drive to ascertain this.
b. If the misfire migrates to the cylinder the coil was moved to:
• Read the DTC memory, print and attach both diagnostic logs (before and after) to the repair order.
• Return both coils to their original cylinders, and only replace the defective coil.
7. Verify repair under the same environmental conditions (e.g.: engine speed, engine load value, vehicle speed,
coolant temperature, intake air temperature, ambient air pressure, voltage at terminal 30, etc.) as noted on the
DTC log.

Warranty
Information only.

Tip:
For payment processing, both Guided Fault Finding logs must be documented identifying that the issue changed
cylinders during the test. All claims are subject for review.

Page 3 of 4
© 2013 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other
intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice.
No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or
otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher.

Technical Bulletin
Required Parts and Tools
No Special Parts required.

Tool Description

Tool No:

Ignition Coil Puller

T40039

Additional Information
All part and service references provided in this Technical Bulletin are subject to change and/or removal.
Always check with your Parts Dept. and Repair Manuals for the latest information.

Page 4 of 4
© 2013 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other
intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice.
No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or
otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher.