What does code P1600 mean on Toyota vehicles?
The ECM detects an abnormal or unstable battery power supply, which may cause memory resets or no-start conditions.
OBD-II Code Toyota
P1600 — Toyota — ECM Battery Power Malfunction
The ECM detects an abnormal or unstable battery power supply, which may cause memory resets or no-start conditions.
Common symptoms
- Engine will not start
- intermittent resets
- loss of stored data
Possible causes
- Battery feed fault
- blown fuse
- loose or corroded power connections
- wiring issues
Initial recommendation
Check ECM battery power supply, fuses, and ground connections.
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
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