U0131 on Cadillac: How to Diagnose & Fix
Lost Communication with Power Steering Module
1 Cadillac model · 1 documented issue
U0131 on Cadillac by model: symptoms, diagnosis and fix
GM PI1294B covers 2014-2016 XTS vehicles with belt-drive electronic power steering RPO NJ2 when a Service Power Steering message appears intermittently after a cold start and C056D 3C, C0475 00 or U0131 is current or stored.
Common Symptoms
- Intermittent Service Power Steering message after a cold start
- C056D 3C
- C0475 00
- U0131
How to Fix
Have a qualified technician verify RPO NJ2 and the exact DTC subtypes, inspect the G111 ground and XTS 80A F72UA fuse connections, fully charge and test the battery, then update the power-steering control module under current GM programming procedures. Do not replace the steering gear, module or battery solely from this card.
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
Sources for this issue (1)
U0131 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does U0131 mean on a Cadillac?
U0131 stands for "Lost Communication with Power Steering Module." This is a network communication code meaning the vehicle's computers have lost communication with the power steering control module over the data bus (CAN). Modern cars link control modules so they can share data, and this code sets when other modules stop receiving expected messages from the power steering unit. The most common result is loss or reduction of power-assisted steering, making the wheel feel heavy, along with a warning light. It generally points to a wiring/connector or power problem at the steering module, a bus fault, or a failed module rather than a mechanical steering issue. On Cadillac it is documented across 1 model: XTS.
What are the most common causes of U0131?
The most common causes of U0131 are: Loss of power or ground to the power steering module, Open or shorted CAN bus wiring to the module, Corroded or loose connector at the steering module, Blown fuse feeding the power steering system, Failed power steering control module, Other module or wiring fault disrupting the data bus, Software/configuration mismatch after a repair. The specific cause varies by vehicle.
How much does it cost to fix U0131 on a Cadillac?
Repair costs vary widely with the root cause and Cadillac model; each issue on this page carries its own estimate where one is published.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.