U0131 Code: Lost Communication With Power Steering Control Module

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What Is U0131 Code?

The U0131 code is an OBD-II communication fault code that indicates a lost connection between the vehicle control modules and the Power Steering Control Module (PSCM). This communication failure can affect electronic power steering operation and may cause reduced steering assistance.

Code Description

U0131 means that one or more vehicle control modules cannot communicate with the Power Steering Control Module through the CAN (Controller Area Network). The PSCM controls electronic steering assistance and monitors steering system operation.

Vehicles Affected by U0131 Code

The U0131 code may appear on vehicles equipped with electronic power steering systems, including:

  • Ford vehicles with Electric Power Assisted Steering (EPAS)
  • General Motors vehicles
  • Toyota and Lexus models
  • Nissan and Infiniti vehicles
  • Honda and Acura models
  • Hyundai and Kia vehicles
  • BMW vehicles
  • Mercedes-Benz models
  • Volkswagen and Audi vehicles
  • Jeep and Dodge vehicles

The exact diagnosis depends on the vehicle year, model, and steering system design.

Systems Involved

  • Power Steering Control Module (PSCM)
  • Electric Power Steering System (EPS)
  • CAN Communication Network
  • Body Control Module (BCM)
  • ABS and Stability Control Systems

Common Symptoms

  • Power steering warning light
  • Heavy steering wheel operation
  • Reduced steering assistance
  • Steering system fault message
  • Multiple communication codes stored
  • Difficulty steering at low speeds

Possible Causes

  • Failed Power Steering Control Module
  • Damaged CAN High or CAN Low wiring
  • Loose or corroded electrical connectors
  • Low battery voltage
  • Blown fuse for the steering module
  • Water damage inside connectors
  • Software or programming failure

How Serious Is It?

Severity: High

U0131 can affect electronic steering assistance. In some cases, the vehicle may still be driven, but steering effort can increase significantly, especially during parking or low-speed operation.

Diagnostic Steps

  1. Scan all vehicle modules and record communication-related codes.
  2. Check battery voltage and charging system condition.
  3. Inspect the Power Steering Control Module connectors.
  4. Check CAN network wiring for open circuits or shorts.
  5. Verify PSCM power and ground circuits.
  6. Check live steering system data with a professional scan tool.
  7. Perform module programming or calibration if required.

Common Repair Mistakes

  • Replacing the steering module before checking CAN wiring.
  • Ignoring low battery voltage problems.
  • Replacing expensive parts without testing power and ground circuits.
  • Failing to perform programming after module replacement.

Common Repairs

  • Repair CAN communication wiring
  • Replace damaged connectors
  • Repair power and ground circuits
  • Replace Power Steering Control Module
  • Update or program the steering module

Repair Cost

Repair Estimated Cost
CAN wiring repair $50 - $250
Connector repair $50 - $150
Power Steering Control Module replacement $500 - $1500
Programming and calibration $100 - $500

FAQ

Can I drive with U0131 code?

You may be able to drive, but reduced steering assistance can make the vehicle harder to control.

What causes U0131 code?

The most common causes are CAN communication faults, damaged wiring, low voltage, or a failed Power Steering Control Module.

Will replacing the steering module fix U0131?

Only if testing confirms the module is faulty. Communication circuits should be checked first.

How do I fix U0131 code?

Diagnose the CAN network, repair electrical faults, and program the module if replacement is required.

Related Codes

  • U0130 - Lost Communication With Steering Effort Control Module
  • U0126 - Lost Communication With Steering Angle Sensor Module
  • U0121 - Lost Communication With ABS Control Module
  • U0100 - Lost Communication With ECM/PCM

Conclusion

The U0131 code indicates a communication problem with the Power Steering Control Module. A complete diagnosis should focus on CAN communication, electrical supply, connectors, and module operation before replacing steering components.

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