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B0601low severityBody

Blower Motor Resistor Circuit

on 2008 Dodge Viper 8.4L V10 · RWD

What this code means

Malfunction in the blower motor resistor or speed control module. The resistor controls blower speed at lower settings.

Symptoms

  • Blower only works on highest speed
  • No blower at low/medium settings
  • Blower speed inconsistent

Common causes

  • Faulty blower resistor
  • Thermal fuse in resistor blown
  • Corroded resistor connector
  • Excessive current from failing blower motor

Diagnostic steps

  1. Test blower resistor resistance at each tap
  2. Check thermal fuse continuity
  3. Inspect resistor connector
  4. Measure blower motor current draw

Repair notes

Replace blower motor resistor. If resistor keeps failing, check blower motor current draw as a failing motor can burn resistors.

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