Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC B27A1: Open in Driver Side Electrical Antenna Circuit [08/2015 - 08/2019]: Description
The certification ECU generates a request signal and transmits the signal to the front door outside handle assembly (for driver side) at an interval of 250 ms. The front door outside handle assembly (for driver side) detects when the electrical key is brought close to the vehicle, and when a request signal is received from within 1.0 m (3.28 ft.) of the driver door, the signal is transmitted at an interval of 250 ms. DTC B27A1 is stored by the certification ECU when an open circuit is detected in the circuit between the certification ECU and front door outside handle assembly (for driver side) (CLG1 - ANT1, CG1B - ANT2).
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B27A1 | An open circuit is detected in the circuit between the certification ECU and front door outside handle assembly (for driver side) (CLG1 - ANT1, CG1B - ANT2). |
|
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.