Engine-Codes - Mercury - B1328 Mercury

B1328 Mercury Code - Passenger Door Ajar Circuit Open

- Code Popularity: 565 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC B1328 Mercury?

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 Passenger Door Ajar Switch
  • Passenger Door Ajar Switch harness is open or shorted
  • Passenger Door Ajar Switch circuit poor electrical connection
  • Faulty Smart Junction Box (SJB)
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How to Fix the DTC B1328 Mercury?

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 B1328 Mercury 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 B1328 Mercury 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 RH front door ajar input circuit.

B1328 Mercury Code - Passenger Door Ajar Circuit Open

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