What Does P0A69 Mean?
The hybrid control module has detected a general malfunction in the Phase V current measurement of Drive Motor B. The Phase V current sensor or winding on the secondary drive motor is producing readings outside normal parameters, affecting the motor controller's field-oriented control accuracy.
Safety Warning
Phase anomalies cause motor overheating and erratic torque. Tow to a hybrid-capable facility.
Common Causes
35%
Faulty Phase V current sensor in motor B inverter assembly
25%
Damaged Phase V stator winding in drive motor B
25%
Motor B inverter IGBT degradation on Phase V leg
15%
Phase V cable or connector fault on motor B circuit
Diagnostic Steps
1
Step 1: Monitor motor B Phase U, V, and W currents in live data. Identify if Phase V deviates more than 5% from the other two.
2
Step 2: With HV de-energized, measure Phase V winding resistance on motor B. Compare with U and W.
3
Step 3: Perform insulation resistance test on Phase V winding and cable to housing ground.
4
Step 4: Inspect Phase V cable and connectors for damage, arcing, or corrosion.
5
Step 5: If motor and wiring are sound, the motor B inverter Phase V section needs replacement.
Estimated Repair Cost
$500 - $3,000
Parts + labor, varies by vehicle and location
The hybrid control module has detected a general malfunction in the Phase V current measurement of Drive Motor B. The Phase V current sensor or winding on the secondary drive motor is producing readings outside normal parameters, affecting the motor controller's field-oriented control accuracy.
The most common cause of P0A69 (Drive Motor "B" Phase V Current) is: Faulty Phase V current sensor in motor B inverter assembly
Typical repair costs for P0A69 range from $500 to $3,000, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Phase anomalies cause motor overheating and erratic torque. Tow to a hybrid-capable facility.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0A69 to identify the root cause.
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Quick Info
Category
Powertrain
System
Hybrid Drive Motor System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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