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 MANUALSVOLKSWAGEN2008JETTA GLI (1K2) L4-2.0L TURBO (BPY)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESDIAGNOSTIC MODE 03 - READ DTC MEMORY
2008 Volkswagen Jetta GLI (1K2) L4-2.0L Turbo (BPY)
Diagnostic Mode 03 - Read DTC Memory
2008 Volkswagen Jetta GLI (1K2) L4-2.0L Turbo (BPY)SECTION Diagnostic Mode 03 - Read DTC Memory
Diagnostic Mode 03 - Read DTC Memory
Description
When the Engine Control Module (ECM) recognizes an emission related fault it turns on the Malfunction Indicator Lamp (MIL) or if a Electronic Throttle Malfunction is recognized, the Engine Control Module (ECM) turns on the Electronic Power Control (EPC) Warning Lamp which are both located in the instrument cluster.
Diagnostic Mode 03 is used to retrieve and view any DTC which may be stored in the Engine Control Module (ECM).
The DTC's are sorted by SAE code with the DTC tables consisting of a 5-digit alpha-numeric value.
Depending on scan tool and protocol used, the information displayed in diagnostic mode 03 may be referred to by different names such as Test-ID (TID), Hex-ID, Component-ID (CID), On-Board Diagnostic Monitor Identifier (OBDMID), or contain no name at all and be referenced by only a number.
The following tables provide a breakdown and explanation of the DTC code.
P Codes
U-Codes
RENDER: 1.0x
NO RELATED
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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.