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 B1404
DTC B1404 : Telematics-ECU Telephone Module Error
| DTC Description | DTC |
|---|---|
| B1404 Telematics-ECU Telephone Module Error |
DTC (Telematics System)
- Problem verification
-1. Clear the DTCs with the HDS.
-2. Press the engine start/stop button to select the OFF mode and then select the ON mode.
-3. Check for DTCs with the HDS.
DTC Description DTC B1404 Telematics-ECU Telephone Module Error Is DTC B1404 indicated?
YES
Replace the telematics control unit .
NO
Intermittent failure, the system is OK at this time.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.