Engine-Codes - KIA - B1748 KIA

B1748 KIA Code - Pressure-Side Impact Sensor Front Passenger Communication Error

- Code Popularity: 6,518 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

What are the Possible Causes of the Code B1748 KIA?

  • Faulty Pressure-Side Impact Sensor
  • Pressure-Side Impact Sensor harness is open or shorted
  • Pressure-Side Impact Sensor circuit poor electrical connection
  • Faulty Supplemental Restraints System Control Module (SRSCM)

How to Fix the B1748 KIA Code?

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 Code B1748 KIA?

Labor: 1.0

The cost to diagnose the B1748 KIA code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

Does your KIA have Safety Recalls? → Check here

What are Code B1748 KIA Possible Symptoms?

  • Air Bag Warning Light ON

What Does the B1748 KIA Code Mean?

Pressure-Side Impact Sensor and Rear Side Impact Sensor are installed in the left and the right side of the front door and in the lower of C-pillar respectively. The Pressure-Side Impact Sensor senses an impact based on an acceleration at crashing. Unlike the conventional acceleration sensor, the Pressure Sensor senses an air pressure by a distorted door at crashing and measures an impact. The System Control Module (SCM) detects the impact signals of the Pressure-Side Impact Sensor and Rear Side Impact Sensor and compares with signals of the safe sensor inside. If the signals of all sensors are judged as a collision, the side-airbag and the curtain-airbag would be unfolded.

B1748 KIA Code - Pressure-Side Impact Sensor Front Passenger Communication Error

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Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

  • Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
  • Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
  • Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
  • Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.
Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.