P2059Reductant Injection Air Pump Control Circuit/Open
Generic (OBD-II) interpretation in the TuningBot DTC database.
P · PowertrainEmissionsOBD2
What P2059 means
P2059
Reductant Injection Air Pump Control Circuit/Open
Generic · emissions
Data confidence85%
The control module detected an interruption (open circuit) in the Reductant Injection Air Pump Control circuit, so the expected electrical continuity was not present.
Symptoms
MIL or SCR/AdBlue warning illuminated
Possible start-count-down or torque limitation on some applications
Possible causes
Wiring
reductant injection air pump
Recommended checks
Read NOx sensor values and dosing system status
Check reductant level and quality data
Inspect dosing valve, lines and heater operation
Check wiring and connectors of the SCR components
Check for OEM technical bulletins and software updates
Powertrain: engine, transmission and driveline systems.
2
Generic SAE-standard code: same meaning on every make.
059
Specific fault index within the subsystem.
Frequently asked questions about P2059
What does P2059 mean?
Reductant Injection Air Pump Control Circuit/Open. The control module detected an interruption (open circuit) in the Reductant Injection Air Pump Control circuit, so the expected electrical continuity was not present.
Is P2059 generic or manufacturer-specific?
P2059 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P2059 at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.
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