U0435Invalid Data Received From Power Steering Control Module - Rear
- Generic OBD-II code · Network
- Can trigger limp mode
- How the car detects it
- U0435 refers to the rear power steering module, the controller of active rear-wheel steering. A receiver sets it when the module's status or angle frames arrive but are unusable. GM bulletin 17-NA-130 explains one case on the 2016-17 Cadillac CT6: during a remote start the rear steer module had not yet initialised while the brake module already expected its data, so the EBCM stored U0435 and showed a Service Soon message; new EBCM software is the fix. Porsche's workshop campaign WE14 for the 2014 911 Turbo reflashes both rear-axle steering units after a software error; with the fault active the actuators lock in the straight position and the car behaves like one with fixed rear links until the next ignition cycle. U0134 is lost contact; U0420 covers power steering module A.
- What you may notice
- Service Soon or rear steering fault message
- Larger turning circle, rear wheels held straight
- Likely causes
- LikelyRear steering module not yet ready when receivers expect data, e.g. at remote start
- PossibleSoftware error in rear steering or brake module
- RareLow voltage or poor connector at the rear steering unit
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €50 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.