Lost Communication With Restraints System Sensor H

Where it lives

For U0177, the description names the sensor as the part involved.

Check these first

• A failed restraints system sensor H
• Damaged wiring between sensor H and the computer
• A fault in the computer that reads sensor H
• Corrosion or water at sensor H
• A short in the restraints wiring

What to do next

1. Inspect the wiring to restraints system sensor H
2. Check power and ground at sensor H
3. Look for a short in the restraints wiring
4. Use a scan tool to pinpoint the fault
5. Replace restraints system sensor H if it does not answer
6. Clear the code and retest

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