What Does P0A6E Mean?
Drive Motor B Phase W current is reading above the expected maximum threshold. The hybrid control module detects overcurrent through Phase W of the secondary drive motor, which may be caused by a shorted winding, a failed IGBT, or a malfunctioning current sensor. This condition risks permanent damage to motor B and its inverter.
Safety Warning
Overcurrent poses fire risk and component destruction. Do not operate — tow immediately.
Common Causes
30%
Partial short in Phase W stator winding of drive motor B
30%
Motor B inverter Phase W IGBT shorted
25%
Phase W current sensor reading erroneously high
15%
Phase W cable insulation breakdown on motor B circuit
Diagnostic Steps
1
Step 1: Review freeze frame — motor B Phase W current higher than U and V confirms W-specific overcurrent.
2
Step 2: With HV disabled, measure Phase W winding resistance versus U and V on motor B.
3
Step 3: Megger test Phase W to chassis ground.
4
Step 4: Test motor B inverter Phase W IGBTs for shorts.
5
Step 5: Replace affected components and confirm balanced operation.
Estimated Repair Cost
$800 - $4,000
Parts + labor, varies by vehicle and location
Drive Motor B Phase W current is reading above the expected maximum threshold. The hybrid control module detects overcurrent through Phase W of the secondary drive motor, which may be caused by a shorted winding, a failed IGBT, or a malfunctioning current sensor. This condition risks permanent damag...
The most common cause of P0A6E (Drive Motor "B" Phase W Current High) is: Partial short in Phase W stator winding of drive motor B
Typical repair costs for P0A6E range from $800 to $4,000, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Overcurrent poses fire risk and component destruction. Do not operate — tow immediately.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0A6E to identify the root cause.
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Quick Info
Category
Powertrain
System
Hybrid Drive Motor System
Difficulty
Type
Generic (SAE)
Recommended Tools
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