The Engine Fault Code P2059 refers to an issue with the reductant injection air pump control circuit. This code is primarily associated with vehicles that use selective catalytic reduction (SCR) systems, which help reduce emissions by injecting a urea solution (often called Diesel Exhaust Fluid or DEF) into the exhaust stream.
What P2059 Means:
– Reductant Injection Air Pump: This pump helps to inject air into the reductant system, ensuring that the urea solution is atomized properly for effective mixing and reaction in the SCR system.
– Control Circuit/Open: This indicates that there is a problem with the electrical circuit controlling the air pump. It could mean that the circuit is open (broken) or there is a fault in the wiring or connectors.
Possible Causes:
– Faulty reductant injection air pump
– Damaged wiring or connectors in the control circuit
– Issues with the engine control module (ECM)
– Short circuit or open circuit in the wiring
Manufacturer Differences:
While P2059 generally refers to the same issue across different manufacturers, the specific implications and additional codes can vary. Here are some alternative meanings or related codes for different brands:
1. Volkswagen/Audi: Similar issues may be reported under P2059, but they might also include specific codes related to the SCR system.
2. Mercedes-Benz: May have unique codes related to the AdBlue system, but P2059 typically indicates a similar issue with the reductant system.
3. Porsche: Generally follows the same logic as VW/Audi, as they share many components.
4. Jaguar/Land Rover: They might use different terminology or codes, but P2059 would still relate to the SCR system.
What to Do:
If you encounter this code, its best to:
– Check the wiring and connectors for damage.
– Test the air pump to ensure its functioning correctly.
– Use a diagnostic scanner to check for any additional codes that might provide more context.
– If unsure, consult a professional mechanic, especially if it involves the SCR system, as it can affect emissions and vehicle performance.
The Engine Fault Code P2059 indicates a problem with the reductant injection air pump control circuit or an open circuit. This code is commonly associated with diesel engines, particularly those equipped with selective catalytic reduction (SCR) systems. Here are some possible causes for this code, which can vary by manufacturer and vehicle:
1. Faulty Reductant Injection Air Pump: The pump itself may be malfunctioning or damaged, preventing it from functioning correctly.
2. Wiring Issues: There could be damaged, frayed, or corroded wires in the circuit that connects the pump to the engine control unit (ECU).
3. Bad Connectors: Loose or corroded connectors can disrupt the electrical signal needed for the pump to operate.
4. ECU Problems: The engine control unit may have a fault that affects its ability to control the reductant injection air pump.
5. Fuses: A blown fuse in the circuit can prevent the pump from receiving power.
6. Sensor Issues: A malfunctioning sensor related to the SCR system can trigger this code, as it may not be providing the correct information to the ECU.
Manufacturer-Specific Considerations:
– Porsche: Check for specific updates or recalls related to the SCR system, as some models may have known issues.
– Mini: The wiring harness may be more susceptible to wear due to the compact design of the engine bay.
– Mercedes-Benz: These vehicles often have complex electronic systems; ensure that the software is up to date.
– Audi: Look for common issues with the SCR system in specific models, as some may have recalls or service bulletins.
– Jaguar: Ensure that the battery voltage is within the proper range, as low voltage can affect pump operation.
– Land Rover: Check for any known issues with the air pump or its control module, as these can be unique to certain models.
If you encounter the P2059 code, it`s a good idea to perform a thorough inspection of the pump, wiring, and connectors, and consider using a diagnostic scanner to check for any additional codes that may provide more context for the issue.
The P2059 code indicates a problem with the reductant injection air pump control circuit, usually related to the diesel exhaust fluid (DEF) system in diesel vehicles. Heres how to troubleshoot and fix it:
General Steps to Fix P2059
1. Check the Basics:
– Battery Voltage: Ensure your battery is fully charged. A weak battery can cause various issues.
– Fuses: Inspect the fuses related to the reductant system. Replace any blown fuses.
2. Inspect the Wiring and Connectors:
– Look for damaged wires, loose connections, or corrosion in the connectors associated with the reductant injection air pump.
– Repair or replace any damaged wiring or connectors.
3. Test the Reductant Injection Air Pump:
– Use a multimeter to check the pump`s resistance. Consult the vehicles service manual for the correct specifications.
– If the pump is faulty, replace it.
4. Check the Control Module:
– The Engine Control Module (ECM) may have a fault. You can try resetting the ECM by disconnecting the battery for a few minutes.
– If the code returns after resetting, you may need to reprogram or replace the ECM.
5. Inspect the Reductant System:
– Check for leaks in the DEF lines and ensure that the DEF fluid is clean and at the proper level.
– Replace any faulty components in the DEF system, such as the injector or the tank.
6. Scan for Additional Codes:
– Use an OBD-II scanner to check for any other codes that may provide more context for the issue.
Manufacturer-Specific Considerations
– Porsche:
– Check for specific software updates for the ECM that might address known issues with the DEF system.
– Mini:
– Ensure that the DEF fluid used is the correct type, as using the wrong fluid can cause system issues.
– Mercedes:
– Mercedes vehicles often have a more complex DEF system. If the above steps dont work, consider taking it to a dealer for a more in-depth diagnosis.
– Audi:
– Audi vehicles may require a specific procedure to reset the DEF system after repairs. Consult the service manual for details.
– Jaguar:
– Jaguar may have unique wiring harness issues, so inspect the harness thoroughly for damage.
– Land Rover:
– Land Rover vehicles may have additional sensors in the DEF system. Make sure to check all related components.
Conclusion
Fixing the P2059 code involves checking the electrical system, the air pump, and the DEF system. If youre not comfortable with these steps, its a good idea to consult a professional mechanic. Always refer to the vehicle`s service manual for specific details.
Driving with a P2059 code, which indicates an issue with the reductant injection air pump control circuit, is not recommended. This code is related to the emissions system, specifically the selective catalytic reduction (SCR) system used in diesel engines to reduce harmful emissions. Heres a breakdown of the implications based on different manufacturers:
General Implications:
1. Emissions Issues: The vehicle may fail emissions tests, which can lead to fines or being unable to register the car.
2. Performance: You might experience reduced engine performance or power loss.
3. Check Engine Light: The check engine light will likely stay on, which can mask other potential issues.
Manufacturer-Specific Considerations:
1. Porsche:
– Driving with this code can lead to decreased performance and increased emissions. It`s best to address the issue promptly to avoid long-term damage.
2. Mini:
– Similar to Porsche, Mini vehicles with this code may not perform optimally and could face emissions-related problems. Its advisable to get it checked soon.
3. Mercedes-Benz:
– Mercedes vehicles might enter a `limp mode` to protect the engine and emissions system. Driving in this mode can be risky, so it`s best to fix the issue before driving further.
4. Audi:
– Audi vehicles also rely on the SCR system for emissions control. Ignoring this code could lead to costly repairs down the line and potential legal issues regarding emissions.
5. Jaguar:
– Jaguar models may experience similar performance issues. It`s crucial to address the P2059 code to maintain engine health and compliance with emissions standards.
6. Land Rover:
– Land Rover vehicles might also enter a reduced power mode. Driving with this code can lead to more significant issues, so prompt attention is advised.
Our view, it`s not safe to drive with a P2059 code. Although the immediate risk may vary by manufacturer, it`s best to have the issue diagnosed and repaired as soon as possible to ensure your vehicle runs efficiently and meets emissions standards.
