P1A03 - Drive Motor 'A' Shutdown Circuit

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

  • Motor Shutdown (MSDN) circuit open
  • Faulty Transmission Control Module (TCM)
  • Faulty Powertrain Control Module (PCM)

Possible symptoms

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

P1a03 Description

The Transmission Control Module (TCM) continuously monitors the Motor Shutdown (MSDN) circuit and the Controlled Area Network (CAN) signal for an MSDN request from the Powertrain Control Module (PCM). This code is set when the PCM requests traction motor shutdown through the CAN signal or if there is an MSDN circuit fault. The traction motor inverter will be disabled.
OBDII Code P1a03 - Drive Motor 'A' Shutdown Circuit - AutoCodes.com

P1A03 Information for specific makes

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P1A03 Comments

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