U0134Lost Communication With Power Steering Control Module - Rear
- Generic OBD-II code · Network
- How the car detects it
- U0134 is stored when a controller loses contact with the rear power steering control module, the actuator unit of a rear-wheel or four-wheel steering system. Such systems turn the rear wheels by a few degrees, opposite to the front ones at low speed for a smaller turning circle and in the same direction at higher speed for calmer lane changes. No manufacturer explains U0134 in a publicly available document. CARB obliges manufacturers to detect missing communication from digital inputs as a separate fault, while electronic steering only falls under OBD monitoring where other diagnostics depend on it, so the code is mainly a chassis matter. U0131 belongs to the front steering, U0435 to invalid rear-steer data. Usually the rear wheels stay centred.
- What you may notice
- Steering system warning lamp or message
- Larger turning circle, rear wheels no longer steer
- Likely causes
- LikelyFuse, supply, ground or CAN wiring of the rear steering module faulty
- PossibleCorroded or wet connector at the rear axle actuator
- RareRear steering control module internally faulty
- Repair
- Hard · Usually a job for a workshop.Typical cost: €80 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.