The dreaded P1950 Ross-Tech code. It’s a common enough sight for VW/Audi owners that it sends shivers down the spine. But what does it actually mean, and how can you fix it? This comprehensive guide will dive deep into the P1950 Ross-Tech code, explaining its causes, symptoms, diagnostic procedures, and solutions, empowering you to tackle this issue head-on.

Understanding the P1950 Ross-Tech Fault Code

The P1950 code, as interpreted by Ross-Tech’s VCDS software, typically indicates a malfunction within the intake manifold runner control system. More specifically, it points to a problem with the intake manifold runner position sensor/switch circuit bank 2. This system plays a vital role in optimizing engine performance and fuel efficiency by adjusting the length of the intake runners based on engine speed and load.

What Causes the P1950 Ross-Tech Code?

Several factors can trigger the P1950 code. These include:

• Faulty Intake Manifold Runner Position Sensor: This sensor provides feedback to the engine control unit (ECU) regarding the position of the intake runners. If it fails, the ECU can’t accurately control the system.
• Wiring Issues: Damaged, corroded, or loose wiring connections within the sensor circuit can disrupt signal transmission, leading to the P1950 code.
• Vacuum Leaks: The intake manifold runner control system often utilizes vacuum actuators. Leaks in these lines can prevent proper operation and trigger the fault code.
• Sticking or Broken Intake Manifold Runner Flaps: Carbon buildup or mechanical wear can cause the flaps to stick or break, preventing them from moving freely and resulting in the P1950 code.
• Faulty Intake Manifold Runner Control Solenoid: This solenoid regulates vacuum flow to the actuators, controlling the position of the runners. A malfunctioning solenoid can disrupt system operation.

P1950 Ross-Tech Intake Manifold Inspection

Diagnosing the P1950 Ross-Tech Code

Accurately diagnosing the P1950 code is crucial for effective repair. Here’s a step-by-step guide:

1. Retrieve the Fault Code: Use a compatible diagnostic scan tool, such as Ross-Tech’s VCDS, to read the fault codes stored in the ECU. Confirm the presence of the P1950 code.
2. Visually Inspect the Wiring and Vacuum Lines: Carefully examine the wiring harness connected to the intake manifold runner position sensor and control solenoid for any signs of damage, corrosion, or loose connections. Check vacuum lines for cracks, kinks, or disconnections.
3. Test the Intake Manifold Runner Position Sensor: Use a multimeter to test the sensor’s voltage and resistance values according to the manufacturer’s specifications.
4. Check the Intake Manifold Runner Control Solenoid: Test the solenoid’s operation by applying voltage and checking for proper movement and vacuum actuation.
5. Inspect the Intake Manifold Runner Flaps: Manually check the movement of the intake runners for any signs of sticking or breakage.

P1950 Ross-Tech Diagnostic Procedure Using VCDS

Fixing the P1950 Ross-Tech Problem: What are my options?

Once you’ve pinpointed the cause of the P1950 code, you can proceed with the appropriate repairs. This may involve:

• Replacing the Intake Manifold Runner Position Sensor: If the sensor is faulty, replacement is typically the most effective solution.
• Repairing Wiring or Vacuum Lines: Damaged wiring or vacuum lines should be repaired or replaced as needed.
• Cleaning or Replacing the Intake Manifold: Carbon buildup can be cleaned, but severely damaged or broken intake manifold runners often require replacing the entire manifold assembly.
• Replacing the Intake Manifold Runner Control Solenoid: A faulty solenoid should be replaced with a new one.

Addressing the P1950 Ross-Tech Code: Expert Insights

“The P1950 code can be tricky, but a systematic approach to diagnosis is key,” says Dr. Andreas Wagner, Automotive Diagnostics Specialist. “Don’t jump to conclusions. Thoroughly check all potential causes before replacing any parts.”

“Regular maintenance can prevent many P1950-related issues,” adds Mr. Hans Müller, Senior Automotive Technician. “Keeping the intake system clean and checking vacuum lines regularly can save you headaches down the road.”

Conclusion: Conquering the P1950 Ross-Tech Challenge

The P1950 Ross-Tech code, while initially intimidating, is a solvable problem. By understanding its causes, symptoms, and diagnostic procedures, you can effectively address this issue and restore your vehicle’s performance. Remember, accurate diagnosis is crucial. If you’re unsure about any step, seeking professional help is always recommended. Feel free to contact us at VCDSTool for further assistance 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.