Engine-Codes - Generic - B1572

B1572 Code - Door Ajar Left Right Switch Circuit Open

- Code Popularity: 10,149 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B1572?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Door Ajar Left Right Switch
  • Door Ajar Left Right Switch harness is open or shorted
  • Door Ajar Left Right Switch circuit poor electrical connection
  • Faulty Smart Junction Box (SJB)
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How to Fix the DTC B1572?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the B1572 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the B1572 Code Mean?

The Smart Junction Box (SJB) sends a voltage signal to the door ajar switches. The door ajar switch is closed with the door closed. When the door is opened, the signal to ground is interrupted indicating an open door to the SJB. The Diagnostic Trouble Code (DTC) sets when the SJB detects an open from the LH rear door ajar input circuit.

B1572 Code - Door Ajar Left Right Switch Circuit Open

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Code B1572 Information for Specific Makes

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