Heated oxygen sensor (HO2S) 1, Bank 1, reference voltage - open circuit
VAG · emissions
Data confidence62%
The control module detected an interruption (open circuit) in the Heated oxygen sensor (HO2S) 1, Bank 1, reference voltage circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Audi.
Possible causes
Wiring open circuit
HO2S
HT leads
spark plugs
misfire detection
Applies toAudi
P1181
Heated oxygen sensor (HO2S) reference voltage - open circuit
VAG · emissions
Data confidence80%
The control module detected an interruption (open circuit) in the Heated oxygen sensor (HO2S) reference voltage 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.
181
Specific fault index within the subsystem.
Frequently asked questions about P1181
What does P1181 mean?
Diagnostic Trouble Code (2 interpretations). The control module detected an interruption (open circuit) in the Heated oxygen sensor (HO2S) 1, Bank 1, reference voltage circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Audi.
Is P1181 generic or manufacturer-specific?
P1181 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 P1181 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.