U0333Software Incompatibility With Gear Shift Control Module B
- Generic OBD-II code · Network
- Can trigger limp mode
- How the car detects it
- With shift-by-wire, both the driver's selector and the unit that actually moves the range are electronic modules; module B denotes a second such unit, either a further selector or the shift actuator. U0333 means its software or calibration does not fit the partner controller. Allison lists it for the sixth-generation controls of its 3000 and 4000 series, released in 2021, as Gear Shift Module 2 Incompatible, next to U0304 for module 1; the same bulletin warns that new push-button selectors do not work with fifth-generation TCMs and that the fitted selector must match the TCM calibration (SIL 14-TR-21). Lexus labels the shift actuator ECU of the 2022 NX 350 and NX 250 with B and reflashed its main and sub calibration in campaign 22LC03. U0291 is lost contact, U0592 invalid data.
- What you may notice
- Range changes requested at this unit are ignored
- Transmission warning or shift indicator fault
- Vehicle stays in or returns to neutral or park
- Likely causes
- LikelySelector or actuator of another generation or part number fitted
- PossibleTransmission calibration specifies a different selector than the one fitted
- RareShift actuator ECU still on an outdated calibration
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.