OBD Guide
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C2791

Power Steering Motor Circuit Open

C2791 is an OBD-II diagnostic trouble code meaning: Power Steering Motor Circuit Open. Common causes: broken or damaged wiring harness to the eur engine, oxidation or damage to connectors. Estimated repair cost: $56–333.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–333 (est.)

Symptoms

  • Heavy steering
  • The ESP or steering wheel fault indicator is on
  • Loss of power steering assistance
  • Rattling or strange noises coming from the steering rack area

Causes

  • Broken or damaged wiring harness to the EUR engine
  • Oxidation or damage to connectors
  • Power steering motor malfunction
  • Problems with the PSCM control unit
  • Blown EUR power supply fuse

How to Fix

  1. Check the EUR circuit fuses
  2. Inspect the wiring harness and connectors for damage.
  3. Check the resistance of the EUR motor windings
  4. Scan the PSCM for additional errors
  5. If necessary, replace the EUR motor or repair the harness

Related codes

C2790C2792U0121

FAQ

What does the C2791 code mean?

C2791 is an OBD-II diagnostic trouble code that indicates: Power Steering Motor Circuit Open

What causes a C2791 error code?

The most common causes of C2791 include: Broken or damaged wiring harness to the EUR engine; Oxidation or damage to connectors; Power steering motor malfunction; Problems with the PSCM control unit.

How do I fix a C2791 diagnostic trouble code?

To fix C2791: Check the EUR circuit fuses. Inspect the wiring harness and connectors for damage.. Check the resistance of the EUR motor windings. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C2791?

Limited driving only, diagnose soon

How much does it cost to fix C2791?

The estimated repair cost for C2791 is $56–333. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat