What does code P1256 mean on Audi vehicles?
An open circuit or short to battery positive has been detected in the engine coolant temperature sensor circuit.
OBD-II Code Audi
P1256 — Audi — Engine Coolant Temperature Sensor Circuit Open or Short to B+
An open circuit or short to battery positive has been detected in the engine coolant temperature sensor circuit.
Common symptoms
- False overheating indication
- mixture issues.
Possible causes
- Electrical fault in circuit.
Initial recommendation
Check wiring and ECT sensor.
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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