Secondary air injection (AIR) pump relay - open circuit
VAG · emissions
Data confidence62%
The control module detected an interruption (open circuit) in the Secondary air injection (AIR) pump relay circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Audi.
Possible causes
Wiring open circuit
fuse
AIR pump relay
Applies toAudi
P1433
Secondary Air Pump Relay (J299): Open Circuit
VAG · emissions
Data confidence88%
The control module detected an interruption (open circuit) in the Secondary Air Pump Relay (J299) circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Volkswagen. Volkswagen Group tools also report it as fault code 17841. Documented across Volkswagen Group applications (Audi, SEAT and Škoda included).
Symptoms
Malfunction Indicator Light (MIL) ON
Possible causes
Fuse(s) faulty
Wiring and/or Connector(s) from/to Secondary Air Pump Relay (J299) faulty
Secondary Air Pump Relay (J299) faulty
Recommended checks
Check Fuse(s)
Check Wiring and/or Connector(s) from/to Secondary Air Pump Relay (J299)
Powertrain: engine, transmission and driveline systems.
1
Manufacturer-defined range: the meaning can differ between brands.
433
Specific fault index within the subsystem.
Frequently asked questions about P1433
What does P1433 mean?
Diagnostic Trouble Code (2 interpretations). The control module detected an interruption (open circuit) in the Secondary air injection (AIR) pump relay circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Audi.
Is P1433 generic or manufacturer-specific?
P1433 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 P1433 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.