Engine-Codes - Generic - B1328

B1328 - Passenger Door Ajar Circuit Open

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

B1328 Possible 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)

How is the B1328 code repair?

Start by checking 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's pins.

What is the cost to diagnose the B1328 code

Labor: 1.0

The cost to diagnose the B1328 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

B1328 Meaning

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.

More Information

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