Experiencing issues with your Audi A2? The dreaded check engine light can be a source of anxiety, especially when accompanied by fault code 19559. This code specifically relates to the fuel system, often indicating a malfunction with the fuel pump relay. This comprehensive guide breaks down the causes, symptoms, and solutions for tackling Audi A2 fault code 19559, empowering you to get back on the road with confidence.

Understanding Fault Code 19559

Fault code 19559 in your Audi A2 typically signifies a problem with the fuel pump relay circuit. This relay acts as a switch, controlling the flow of electricity to the fuel pump, which is responsible for delivering fuel from the tank to the engine. A malfunctioning relay can disrupt this process, leading to a range of performance issues.

Common Causes of Fault Code 19559

While a faulty fuel pump relay is a primary suspect, several other culprits could trigger fault code 19559:

• Defective Fuel Pump Relay: The relay itself might be worn out, damaged, or experiencing an internal electrical fault, preventing it from properly supplying power to the fuel pump.
• Wiring Issues: Damaged, corroded, or loose wiring in the fuel pump relay circuit can disrupt the electrical signal, leading to communication errors between the relay and the engine control unit (ECU).
• Blown Fuse: The fuse protecting the fuel pump relay circuit might have blown, cutting off power to the relay and preventing it from activating the fuel pump.
• Faulty Fuel Pump: While less common, a failing fuel pump itself can sometimes trigger this fault code, particularly if it draws excessive current, overloading the relay.

Audi A2 Fuel Pump Relay Location

Recognizing the Symptoms

Identifying the symptoms associated with fault code 19559 can help narrow down the potential cause:

• Engine Cranking but Not Starting: A common symptom is the engine cranking but failing to start, indicating the fuel pump isn’t receiving power to deliver fuel.
• Intermittent Engine Stalling: The engine might stall unexpectedly while driving, especially at low speeds or idle, due to inconsistent fuel delivery.
• Rough Engine Idle: A malfunctioning fuel pump relay can cause an imbalanced fuel-air mixture, resulting in a rough or uneven idle.
• Decreased Fuel Efficiency: If the fuel pump isn’t operating optimally, your Audi A2 might experience a noticeable drop in fuel economy.

Diagnosing and Troubleshooting

Before jumping to conclusions, it’s crucial to properly diagnose the root cause of fault code 19559. Here’s a step-by-step approach:

1. Retrieve Fault Codes: Begin by using an OBD-II scanner to read the fault codes stored in your Audi A2’s ECU. Confirm the presence of code 19559.
2. Inspect the Fuel Pump Relay: Locate the fuel pump relay in the fuse box and visually inspect it for any signs of damage, such as burning, melting, or corrosion.
3. Test the Relay: With the ignition off, use a multimeter to test the relay’s continuity and resistance. A faulty relay will show no continuity or incorrect resistance readings.
4. Check the Fuse: Inspect the fuse associated with the fuel pump relay circuit for any signs of a blown fuse, such as a broken wire or a blackened glass tube.
5. Inspect Wiring and Connections: Examine the wiring harness connected to the fuel pump relay for any damage, loose connections, or corrosion.
6. Test Fuel Pump Operation: If the relay and wiring check out, you can test the fuel pump directly by applying power and ground to its terminals.

Testing the Fuel Pump in an Audi A2

Solutions and Repairs

Once you’ve pinpointed the cause of fault code 19559, you can proceed with the appropriate repair:

• Replace the Fuel Pump Relay: If the relay is faulty, replacing it is a straightforward and relatively inexpensive fix.
• Repair or Replace Damaged Wiring: Address any wiring issues by repairing or replacing the affected sections of the wiring harness.
• Replace Blown Fuse: Replace the blown fuse with a new one of the correct amperage rating.
• Address Fuel Pump Issues: If the fuel pump is faulty, it might require repair or replacement, which is a more involved procedure.

Expert Insights

“While fault code 19559 often points to a relatively simple relay issue, it’s essential not to overlook the possibility of other contributing factors,” advises Mark Stevenson, Senior Automotive Technician at VCDSTool. “Thorough diagnostics and a systematic approach to troubleshooting are key to efficiently resolving this issue and preventing its recurrence.”

Preventing Future Occurrences

Taking preventative measures can help minimize the chances of encountering fault code 19559 again:

• Regular Vehicle Maintenance: Adhering to your Audi A2’s recommended maintenance schedule, including inspections of the fuel system, can help identify potential issues early on.
• Quality Parts: When replacing components like relays or fuses, always opt for high-quality parts from reputable manufacturers to ensure reliability and longevity.
• Promptly Address Electrical Issues: Don’t ignore warning signs of electrical problems, such as flickering lights or unusual noises. Addressing these issues promptly can prevent further damage and more extensive repairs.

Conclusion

Encountering Audi A2 fault code 19559 can be frustrating, but understanding its meaning, causes, and solutions empowers you to take control. By following the troubleshooting steps outlined in this guide, you can identify the root cause and implement the necessary repairs. Remember, regular maintenance and addressing potential issues promptly can go a long way in preventing this fault code from resurfacing and ensuring your Audi A2 continues to deliver a smooth and reliable driving experience.

Need further assistance with your Audi A2? Contact our expert team at VCDSTool at +1 (641) 206-8880 and our email address: vcdstool@gmail.com or visit our office at 6719 W 70th Ave, Arvada, CO 80003, USA.