What does code P1600 mean on Volkswagen vehicles?
The ECU detects low voltage at terminal 15 (ignition-switched power supply).
OBD-II Code Volkswagen
P1600 — Volkswagen — Power Supply Terminal 15 Low Voltage
The ECU detects low voltage at terminal 15 (ignition-switched power supply).
Common symptoms
- Multiple system faults
- drivability issues
Possible causes
- Weak battery
- faulty ignition switch
- wiring issues
Initial recommendation
Inspect battery, ignition switch, and power supply wiring.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine Volkswagen code P1600 with your vehicle's actual symptoms for more complete diagnostic guidance.
Go to the app View more brands