C1581EPS assist map not written
- Toyota/Lexus code · Power steering
- Lights a warning lamp
- How the car detects it
- The power steering unit has no assist map stored for this car. It happens when a new or replacement EPS unit was fitted without loading the map with a scan tool. When the power steering limits or stops its assistance, the steering becomes heavy but still works mechanically.
- What you may notice
- P/S (power steering) warning light
- Heavy steering
- Likely causes
- PossibleAssist map not written after the EPS unit was replaced
- Sources
Backed by at least two independent sources.
From Obdaryn's Toyota/Lexus pack, exactly as the app shows it, with the public sources above. Guidance only; confirm with a workshop.