Nitrogen oxides (NOx) heater sensor - open circuit
VAG · engine
Data confidence62%
The control module detected an interruption (open circuit) in the Nitrogen oxides (NOx) heater circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Audi.
Possible causes
Wiring open circuit
NOx sensor
Applies toAudi
P1038
Nitrogen oxides (NOx) heater sensor - open circuit
VAG · engine
Data confidence62%
The control module detected an interruption (open circuit) in the Nitrogen oxides (NOx) heater circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Volkswagen.
Powertrain: engine, transmission and driveline systems.
1
Manufacturer-defined range: the meaning can differ between brands.
038
Specific fault index within the subsystem.
Frequently asked questions about P1038
What does P1038 mean?
Nitrogen oxides (NOx) heater sensor - open circuit. The control module detected an interruption (open circuit) in the Nitrogen oxides (NOx) heater circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Audi.
Is P1038 generic or manufacturer-specific?
P1038 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 P1038 at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.