P1600 – Volkswagen DTC

Volkswagen DTC P1600 – Power Supply Terminal No 15 Low Voltage

DTC P1600 meaning on Volkswagen

DTC P1600 on a Volkswagen indicates a Power Supply Terminal No 15 Low Voltage fault. This fault code is related to the power supply to various components in the vehicle, particularly those that are connected to terminal 15, which is the ignition switch power supply.

Volkswagen DTC P1600 symptoms

Symptoms of DTC P1600 on a Volkswagen may include:

  • Difficulty starting the engine
  • Engine stalling
  • Loss of power
  • Electrical malfunctions

Volkswagen DTC P1600 causes

Common causes of DTC P1600 on a Volkswagen include:

  • Weak or failing battery
  • Loose or corroded battery terminals
  • Faulty ignition switch
  • Wiring issues

Volkswagen DTC P1600 seriousness

DTC P1600 should be addressed promptly as it can lead to starting issues, engine stalling, and other electrical problems. Ignoring this fault code may result in further damage to the vehicle’s electrical system.

How to diagnose DTC P1600 on Volkswagen

To diagnose DTC P1600 on a Volkswagen, a mechanic would typically perform the following steps:

  1. Check the battery voltage and condition
  2. Inspect the battery terminals for tightness and corrosion
  3. Test the ignition switch for proper operation
  4. Inspect the wiring connected to terminal 15 for any damage or loose connections

How to fix DTC P1600 on Volkswagen

To fix DTC P1600 on a Volkswagen, the following steps may be taken:

  1. If the battery is weak or failing, replace it
  2. Clean or replace corroded battery terminals
  3. If the ignition switch is faulty, replace it
  4. Repair any damaged wiring or tighten loose connections

How to erase DTC P1600 on Volkswagen

After addressing the underlying issue causing DTC P1600 on a Volkswagen, the fault code can be erased using a diagnostic scanner or by disconnecting the vehicle’s battery for a few minutes. Once the code is cleared, the vehicle should be driven to see if the code returns.

Recommended tools for Volkswagen diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.