OBD code B1266 indicates a communication error between various ECUs like the Engine Control Module, Multi Display ECU, A/C ECU, and Combination Meter ECU.
Symptoms include the Engine Light being ON.
This issue can be caused by faulty ECUs, wiring harness issues, or poor electrical connections.
It’s a moderate concern.
To fix, inspect wiring harnesses, connectors, and ECU 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 b1266 OBD Code
The vehicle displays a fault code B1266 related to the airbag system.
- Symptoms: Service Engine Soon Warning Light ON.
- Strange clicking noise from the steering column.
- Steering wheel feels loose or wobbly.
- Difficulty steering at low speeds.
- Steering wheel doesn’t return to center position easily.
Causes of the b1266 OBD Code
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Code B1266 typically indicates a fault related to the steering wheel audio control switch circuit.
- B1266 can be caused by a faulty Engine Control Module (ECM).
- A faulty Multi Display ECU.
- A faulty A/C ECU.
- A faulty Combination Meter ECU.
- The harness being open or shorted between ECUs. An ECU circuit with poor electrical connection.
Fixing Error Code b1266 Step By Step
Address the issue by inspecting the seatbelt switch circuit for fault code B1266.
- To fix OBDII code B1266, start by reviewing the possible causes mentioned above.
- Visually examine the wiring harness and connectors related to the code.
- Check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- If no issues are found with the wiring and connectors, proceed to test the sensor or module associated with the code for proper operation.
- Replace the sensor or module if necessary.
- Clear the fault codes from the vehicle’s computer using a scan tool.
- Test drive the vehicle to ensure the code does not return, indicating a successful repair.
Cost Of Fixing b1266 Fault Code
Diagnosing and repairing fault code B1266 may involve inspecting and replacing the seatbelt pretensioner circuit.
The cost to diagnose and fix OBD code B1266 depends on the estimated 1. 0hour repair time.
Labor rates usually range from $75 to $150 per hour, so the general cost could be between $75 and $150. Factors like shop rates and the complexity of the repair can influence the final cost.
Details of the b1266 OBD Code
B1266 code indicates a malfunction in the steering wheel audio control switch circuit.
OBD code B1266 means Door Ajar Lamp Circuit Short to Battery.
This code is triggered by the Body Control Module (BCM) when it detects a short to battery in the circuit for the door ajar lamp.
The door ajar lamp circuit is part of the vehicle’s interior lighting system and is responsible for illuminating the door ajar indicator on the instrument cluster when a door is not fully closed.
Mechanic’s Tech Notes
Code B1266 indicates an open circuit in the rear door driver lock switch.
OBDII code B1266 indicates an issue with the steering wheel audio control switch circuit.
To diagnose, use a multimeter to check for proper voltage at the switch.
Inspect the wiring harness and connectors for any damage or corrosion.
Test the switch for proper operation using a scan tool to see if it responds.
If the switch is faulty, replace it.
Ensure all connections are secure.
Reflash the system if needed.
FAQ
OBD code B1266 indicates a fault with Engine Control Module (ECM), Multi Display ECU, A/C ECU, or Combination Meter ECU. Check wiring and connectors for issues.
Common symptoms of OBD code B1266 include Engine Light ON. Possible causes are faulty ECUs or wiring issues. Fix involves inspecting and repairing related components and connections.
Diagnose OBD code B1266 by checking for faulty ECUs, open/shorted harness, or poor connections. Inspect wiring harness, connectors, and components for damage or corrosion.
Wrap Up
If your airbag warning light is illuminated and OBDII code b1266 is present, it may indicate a fault with the steering wheel airbag module.
This could be caused by a malfunctioning airbag sensor, damaged wiring in the steering column, or a poor connection at the airbag module.
To address OBDII code b1266, check the wiring harness leading to the steering wheel airbag module for any signs of wear, corrosion, or damage.
Ensure all connectors are securely attached and free of debris.
If no visible issues are found, consider testing the airbag sensor and related
