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.
Normal Operation And Fault Conditions
With the ignition ON, the GWM sends messages to the SECM over the HS-CAN 2 and through the SASM. If the SECM does not receive these messages within a certain time frame, the SECM sets a DTC.
For information on the messages set to the SECM from the GWM, refer to Network Message Chart in Description and Operation of the Power Steering article.
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0146:00 | Lost Communication With Gateway "A": No Sub Type Information | Sets when the SECM detects any of the GWM messages is missing. This can be due to a GWM or SASM failure, a circuit failure on the HS-CAN2 or an excessive load on the network. |
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.