P1A0A FORD - Immediate Shutdown Signal

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

  • Immediate Shutdown (ISDN) Circuit
  • Faulty Transmission Control Module (TCM)
  • Faulty Trailer Brake Control Module (TBCM)

Possible symptoms

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

P1a0a Ford Description

The Transmission Control Module (TCM) monitors 2 redundant Immediate Shutdown (ISDN) inputs from the Trailer Brake Control Module (TBCM). When the Transmission Control Module (TCM) detects one or both inputs out of the expected range this code is set.
OBDII Code P1a0a Ford - Immediate Shutdown Signal - AutoCodes.com

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P1A0A FORD Comments

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