How is fault code U0131 fixed?

A typical diagnostic sequence used by mechanics, provided here for educational reference only. Diagnostic work should be performed by a qualified mechanic with the appropriate tools and training. 1. Scan every module, not just the engine ECU, and read the freeze frame. If several modules report U-codes together you're chasing a network or earth fault, not a single dead module 2. Check the fuses feeding the steering module and confirm they actually have power and a clean ground, this is the cheapest thing that fixes it 3. Inspect the earth points at the rack and module mounting. Undo them, clean the terminals back to bright metal, and refit tight. A flaky earth mimics a failed module perfectly 4. Go over the harness and connector with a torch, looking for green corrosion, chafe marks, water staining, or pins that have backed out, paying attention to the bulkhead and anywhere the loom runs near the rack 5. With ignition on and engine off, back-probe the CAN lines at the module connector. You're looking for roughly 2.5V on each line with a small wobble, check manufacturer figures for your car 6. If the wiring, earths and bus voltages all check out, then the module is the suspect. Conf

Lost Communication With Power Steering Control Module A

Jump to the fix

Severity

High

Can I keep driving?

Avoid extended driving; visit a service soon.

First step

A typical diagnostic sequence used by mechanics, provided here for educational reference only. Diagnostic work should be performed by a qualified mechanic with the appropriate tools and training. 1. Scan every module, not just the engine ECU, and read the freeze frame. If several modules report U-codes together you're chasing a network or earth fault, not a single dead module 2.

UNetwork
0Generic code
1Network / Communication
31Sequence number

What does it mean?

U0131 is a Network (CAN bus, module communications) fault code. It indicates: Lost Communication with Power Steering Control Module . This is a standardised OBD-II code. The technical definition is the same regardless of the make or model of vehicle, although specific causes and symptoms can vary between vehicles.

Symptoms

Likely causes

How to fix it

Codes From the Same System

All Fault Codes

Related Similar Codes

This information follows the generic OBD-II definition and does not replace a vehicle-specific diagnosis. The severity rating is rule-based; an authorised diagnostic reading is required for a definitive answer.