P1603Automatic gearbox computer has a fault stored
- Suzuki code · Engine
- How the car detects it
- On cars with an automatic gearbox, the engine computer uses some values measured by the gearbox computer. This code means the gearbox computer has stored a fault of its own, so those values can't be trusted. The real fault is in the gearbox computer: read its codes first.
- Likely causes
- LikelyA fault stored in the automatic gearbox computer
- Sources
Backed by at least two independent sources.
From Obdaryn's Suzuki pack, exactly as the app shows it, with the public sources above. Guidance only; confirm with a workshop.