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P1DA2 HONDA

P1DA2 HONDA - Voltage Control Unit Low Side Open Fail

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Voltage Control Unit (VCU)
  • Voltage Control Unit (VCU) harness is open or shorted
  • Voltage Control Unit (VCU) circuit poor electrical connection
  • Faulty Motor Control Module (Generator)

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1da2 Honda Description

If the low side of Voltage Control Unit (VCU) has open-malfunction, the V2 voltage drops because voltage increase control cannot be performed as commanded, so the VCU low side is judged as abnormal output, and the motor control module (generator) detects a malfunction and stores a DTC.
OBDII Code P1da2 Honda - Voltage Control Unit Low Side Open Fail - AutoCodes.com

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P1DA2 HONDA Comments

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