Engine Coolant Temperature Sensor (G2)
VAG · thermal_management
Data confidence80%
The control module detected a fault associated with the Engine Coolant Temperature Sensor (G2) circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Volkswagen. Documented across Volkswagen Group applications (Audi, SEAT and Škoda included).
Symptoms
Difficulties with starting a cold engine
RPM at idle is irregular
With all engine temperatures seldom idle rpm will vary between 900 - 1000 rpm
Bad acceleration during warming up
Possible causes
Wiring and/or connections faulty
Engine Coolant Temperature Sensor (G2) faulty
Recommended checks
Check wiring and connections
Check / Replace Engine Coolant Temperature Sensor (G2)
Engine Coolant Temperature Sensor (G2). The control module detected a fault associated with the Engine Coolant Temperature Sensor (G2) circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Volkswagen. Documented across Volkswagen Group applications (Audi, SEAT and Škoda included).
Is 01039 generic or manufacturer-specific?
01039 is a manufacturer-specific code. In this database it is documented for: VAG. The same number can mean something different on other brands.
Can TuningBot remove 01039 at file level?
Not guaranteed. 01039 is a manufacturer-specific code in an OEM format, so removability depends on the specific control unit and how the fault is implemented - some can be handled, some cannot. Ask for a quote and our engineers will check your file and tell you, free of charge, whether 01039 is removable in your case.
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VAG