B1320 Possible Causes
- Faulty Driver Door Ajar Switch
- Driver Door Ajar Switch harness is open or shorted
- Driver Door Ajar Switch circuit poor electrical connection
- Faulty Smart Junction Box (SJB)
How do I fix code B1320
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's pins.
Cost of diagnosing the B1320 code
Labor: 1.0The cost of diagnosing the B1320 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.
B1320 Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B1320 MeaningThe 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 front door ajar input circuit.
B1320 More InformationNeed more information on how to fix the B1320 code?
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