What does code P1798 mean on Audi vehicles?
The output speed sensor 2 signal is outside the expected range, affecting transmission shift control.
OBD-II Code Audi
P1798 — Audi — Output Speed Sensor 2 Circuit Range/Performance
The output speed sensor 2 signal is outside the expected range, affecting transmission shift control.
Common symptoms
- Erratic gear shifts
- abnormal transmission behavior
Possible causes
- Faulty output speed sensor
- wiring issues
Initial recommendation
Test output speed sensor 2 and inspect wiring and signal integrity.
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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