OBD Guide
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C1606

Electric Power Steering Motor

C1606 is an OBD-II diagnostic trouble code meaning: Electric Power Steering Motor. Common causes: open or short circuit in the motor circuit, electric power steering motor malfunction. Estimated repair cost: $167–667.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$167–667 (est.)

Symptoms

  • Tight steering
  • The ESP/EPS indicator on the dashboard is on
  • Floating force on the steering wheel
  • Rattling or vibration in the steering wheel

Causes

  • Open or short circuit in the motor circuit
  • Electric power steering motor malfunction
  • Problems with connectors or wiring harness
  • Steering torque sensor malfunction
  • Mechanical damage to the rack

How to Fix

  1. Scan the EPS system for additional trouble codes
  2. Visual inspection of the wiring harness and connectors
  3. Checking the resistance of the motor windings
  4. Torque Sensor Diagnostics
  5. Replacing the electric power steering motor if necessary

Related codes

C1601C1602C1611

FAQ

What does the C1606 code mean?

C1606 is an OBD-II diagnostic trouble code that indicates: Electric Power Steering Motor

What causes a C1606 error code?

The most common causes of C1606 include: Open or short circuit in the motor circuit; Electric power steering motor malfunction; Problems with connectors or wiring harness; Steering torque sensor malfunction.

How do I fix a C1606 diagnostic trouble code?

To fix C1606: Scan the EPS system for additional trouble codes. Visual inspection of the wiring harness and connectors. Checking the resistance of the motor windings. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1606?

Do not drive — repair immediately

How much does it cost to fix C1606?

The estimated repair cost for C1606 is $167–667. Actual cost depends on your vehicle, location, and labor rates.

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