DTC Code 17513 – What does this code mean for Volkswagen?

<ul> <li><b>Check Engine Light</b>: The Check Engine Light will illuminate on the dashboard. This is a common indicator of a fault in the oxygen sensor heating circuit.</li> <li><b>Increased Emissions</b>: The vehicle may fail emissions tests due to improper functioning of the oxygen sensor, leading to higher than normal emissions.</li> <li><b>Poor Fuel Economy</b>: Fuel consumption may increase as the engine control unit (ECU) cannot accurately adjust the air-fuel mixture.</li> <li><b>Rough Idling</b>: The engine may idle roughly or inconsistently due to incorrect air-fuel ratio adjustments.</li> <li><b>Engine Performance Issues</b>: There may be noticeable performance issues such as hesitation, stalling, or lack of power during acceleration.</li> </ul>

<ul><li>The oxygen sensor's heating element may have a short circuit, causing it to draw excessive current.</li><li>Wiring harness issues, such as damaged or frayed wires, can lead to a short circuit to positive.</li><li>A faulty or corroded connector can disrupt the heating circuit, leading to a short.</li><li>ECU (Engine Control Unit) malfunction might incorrectly interpret sensor signals, causing the error code.</li><li>Excessive moisture or contamination in the sensor area can cause electrical shorts.</li></ul>

<ul> <li><b>Initial Scan</b>: Use an OBD-II scanner to confirm the presence of DTC 17513 (P1105) and check for any additional codes.</li> <li><b>Visual Inspection</b>: Inspect the wiring and connectors related to Bank 1 Sensor 2 (downstream oxygen sensor) for any signs of damage, corrosion, or disconnection.</li> <li><b>Check Sensor Resistance</b>: Measure the resistance of the oxygen sensor's heating element using a multimeter. Compare the readings with the manufacturer's specifications.</li> <li><b>Inspect Power Supply</b>: Verify that the oxygen sensor's heating circuit is receiving the correct voltage. Check the fuse and relay associated with the heating circuit.</li> <li><b>Check for Short Circuit</b>: Inspect the wiring harness for any signs of a short to positive. Use a multimeter to check for continuity between the heating circuit and the positive terminal.</li> <li><b>Test Sensor Operation</b>: If the wiring and power supply are intact, test the operation of the oxygen sensor using an oscilloscope to ensure it is functioning correctly.</li> <li><b>Replace Sensor</b>: If the sensor is faulty, replace Bank 1 Sensor 2 with a new one and clear the DTC code. Re-scan to ensure the issue is resolved.</li></ul>

<p>The DTC code 17513 (P1105) for Volkswagen indicates a short circuit to positive in the heating circuit of the oxygen sensor (Bank 1, Sensor 2). This can lead to improper sensor readings, affecting fuel efficiency and emissions.</p><ul><li><b>Immediate Actions:</b> Inspect and repair the wiring and connectors for the oxygen sensor.</li><li><b>Potential Risks:</b> Delayed repair can result in increased fuel consumption and potential damage to the catalytic converter.</li></ul>