What does code P1780 mean on Mazda vehicles?
The ECU detects a malfunction in the transmission control (overdrive) switch circuit.
OBD-II Code Mazda
P1780 — Mazda — Transmission Control Switch Circuit
The ECU detects a malfunction in the transmission control (overdrive) switch circuit.
Common symptoms
- Overdrive operation issues
Possible causes
- Faulty switch or wiring issue
Initial recommendation
Check transmission control switch and 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
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