P2059
Reductant Injection Air Pump Control Circuit/Open
P2059 is an OBD-II diagnostic trouble code meaning: Reductant Injection Air Pump Control Circuit/Open. Common causes: open or short circuit in the pump control circuit, scr air pump malfunction. Estimated repair cost: $56–167.
Symptoms
- Check Engine Light Is On
- Possible reduction in engine power
- Increased NOx emissions
- The SCR system may turn off
- Possible SCR error messages on the instrument panel
Causes
- Open or short circuit in the pump control circuit
- SCR air pump malfunction
- Relay or fuse problems
- Engine control unit malfunction
- Poor contact in circuit connectors
How to Fix
- Check the integrity of the fuses and relays of the SCR system
- Check the wiring and connectors of the pump control circuit
- Test the resistance and performance of the air pump
- Check control signals from the control unit
- If necessary, replace the air pump or repair the wiring
Related codes
Error P2059 by Vehicle Brand
FAQ
What does the P2059 code mean?
P2059 is an OBD-II diagnostic trouble code that indicates: Reductant Injection Air Pump Control Circuit/Open
What causes a P2059 error code?
The most common causes of P2059 include: Open or short circuit in the pump control circuit; SCR air pump malfunction; Relay or fuse problems; Engine control unit malfunction.
How do I fix a P2059 diagnostic trouble code?
To fix P2059: Check the integrity of the fuses and relays of the SCR system. Check the wiring and connectors of the pump control circuit. Test the resistance and performance of the air pump. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2059?
Yes, but get it checked soon
How much does it cost to fix P2059?
The estimated repair cost for P2059 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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