Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSVOLKSWAGEN2004JETTA SEDAN (9M2) L4-2.0L (AVH)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULETECHNICAL SERVICE BULLETINSCUSTOMER INTERESTENGINE CONTROLS - DTC'S 00545/00638 STORED
2004 Volkswagen Jetta Sedan (9M2) L4-2.0L (AVH)
Engine Controls - DTC's 00545/00638 Stored
2004 Volkswagen Jetta Sedan (9M2) L4-2.0L (AVH)SECTION Engine Controls - DTC's 00545/00638 Stored
Condition
DTC's 00545 and 00638 Stored in DTC Memory
01 07 01 Jan. 8, 2007, 2004396, Supersedes Technical Bulletin Group 01 number 97-13 dated May 23, 1997 due to inclusion into ElsaWeb.
Technical Background
May be caused by:
- Incorrect Engine Control Module (ECM) coding (codeable ECM only).
- Wiring harness and/or connections between Transmission Control Module (TCM) and ECM.- Malfunctioning ECM.
- Intermittent continuity in engine harness.
- Poor engine compartment ground (GND).
Production Solution
Not Applicable.
Service
If vehicle exhibits this condition use the following table as a guide for repairs:
- Erase DTC memory, road test vehicle and recheck for any stored DTC's.
Warranty
Information only.
Required Parts and Tools
No Special Tools required.
No Special Parts required.Always see ETKA for the latest part(s) information.
DTC's 00545 and 00638 Stored in DTC Memory
01 07 01 Jan. 8, 2007, 2004396, Supersedes Technical Bulletin Group 01 number 97-13 dated May 23, 1997 due to inclusion into ElsaWeb.
Technical Background
May be caused by:
- Incorrect Engine Control Module (ECM) coding (codeable ECM only).
- Wiring harness and/or connections between Transmission Control Module (TCM) and ECM.- Malfunctioning ECM.
- Intermittent continuity in engine harness.
- Poor engine compartment ground (GND).
Production Solution
Not Applicable.
Service
If vehicle exhibits this condition use the following table as a guide for repairs:
- Erase DTC memory, road test vehicle and recheck for any stored DTC's.
Warranty
Information only.
Required Parts and Tools
No Special Tools required.
No Special Parts required.Always see ETKA for the latest part(s) information.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.