OBD code B1166 indicates an issue with the Curtain Shield Squib Assembly on the left side of the airbag system.
Symptoms include the Air Bag Warning Light being illuminated.
This is usually caused by a faulty squib assembly, open or shorted harness, poor electrical connection, or a faulty Airbag Sensor Assembly Center.
It is a serious issue that requires immediate attention.
To fix it, inspect the wiring harness, connectors, and components for any damage or corrosion.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 10.0 (Out of 10) |
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Symptoms of the b1166 OBD Code
The vehicle displays an airbag warning light on the dashboard.
- Symptoms: Air Bag Warning Light ON
Causes of the b1166 OBD Code
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Possible triggers for fault code B1166 include issues with the airbag module or wiring faults.
- B1166 can be caused by a faulty Curtain Shield Squib Assembly (Left Side).
- An open or shorted Curtain Shield Squib Assembly harness.
- A poor electrical connection in the Curtain Shield Squib Assembly circuit.
- A faulty Airbag Sensor Assembly Center.
Fixing Error Code b1166 Step By Step
To resolve fault code B1166, inspect and repair the driver’s airbag module circuit as needed.
- To fix OBDII code B1166, review the possible causes and visually inspect the wiring harness and connectors associated with the airbag system.
- Check for any damaged components and examine the connector pins for signs of being broken, bent, pushed out, or corroded.
- If no visible issues are found, perform a diagnostic scan tool test to pinpoint the exact cause of the fault.
- Reset the airbag module to see if the code clears.
- If the code persists, consider replacing the faulty airbag module with a new one and ensure it is properly programmed to the vehicle.
Cost Of Fixing b1166 Fault Code
Diagnosing and repairing fault code B1166 may involve inspecting and replacing the seat belt buckle switch.
The cost to diagnose and fix OBD code B1166 depends on the estimated 1. 0hour repair time.
Labor rates usually range from $75 to $150 per hour.
The total cost will vary based on shop rates, complexity of the issue, and any additional parts or services needed.
Details of the b1166 OBD Code
B1166 indicates an issue with the airbag crash sensor circuit in the vehicle.
OBD code B1166 means AC Refrigerant Pressure Sensor Circuit Range/Performance.
This code is triggered by the HVAC (Heating, Ventilation, and Air Conditioning) module when it detects a circuit range or performance issue with the AC refrigerant pressure sensor.
The sensor is responsible for monitoring the pressure of the air conditioning system to ensure proper operation and efficiency.
When the sensor detects values outside the expected range or if its performance is not within specifications, the B1166 trouble code is set, indicating a potential issue with the AC refrigerant pressure sensor circuit.
Mechanic’s Tech Notes
Code B1166 relates to a fault in the airbag sensor circuit for the passenger side.
OBDII code B1166 relates to a fault in the HVAC control module.
To diagnose, use a scan tool to check for communication issues with the module.
Inspect the wiring harness and connectors for any damage, corrosion, or loose connections.
Test the power and ground circuits using a voltmeter to ensure proper voltage levels.
If no visible issues are found, consider reprogramming or replacing the HVAC control module.
Remember to clear the code after repairs are made to see if it returns.
FAQ
OBD code B1166 indicates an issue with the left side curtain shield squib assembly. Check wiring harness, connectors, and components for faults causing Air Bag Warning Light to illuminate.
Common symptoms of OBD code B1166 include Air Bag Warning Light ON. Causes may be a faulty Curtain Shield Squib Assembly (Left Side). Fix: Inspect wiring harness and connectors for damage.
Diagnose and repair OBD code B1166 by checking the left side curtain shield squib assembly, wiring harness, connectors, and airbag sensor assembly center for faults.
Wrap Up
If your vehicle displays OBD code b1166, you may experience issues with the airbag system, such as a faulty impact sensor, damaged wiring, or a loose connection in the airbag system circuit.
These problems can trigger the airbag warning light on your dashboard.
To address OBD code b1166, start by inspecting the impact sensor and its wiring for any visible damage.
Check the connectors for a secure fit and proper contact.
If necessary, replace the impact sensor and repair any damaged wiring to ensure the airbag system functions correctly.
