C1177 Control Area Network Local Area Network Converter Control Unit Battery Voltage Power Supply Circuit

OBD2 Code: C1177

Description: Control Area Network (CAN) Local Area Network (LAN) Converter Control Unit Battery Voltage Power Supply Circuit

Definition: This code indicates a problem with the battery voltage power supply circuit for the CAN LAN converter control unit. It typically means that there is an issue with the electrical supply to this component, which can affect communication between various vehicle systems.

C1177 – Control Area Network Local Area Network Converter Control Unit Battery Voltage Power Supply Circuit

Typical Severity: Moderate

Common Causes

C1177 – Control Area Network Local Area Network Converter Control Unit Battery Voltage Power Supply Circuit

Common causes:

• Faulty control area network (CAN) local area network (LAN) converter control unit
• Low battery voltage
• Poor power supply circuit connection

 

Common Misdiagnosis

• OBD2 Code: C1177
  • Description: Control Area Network Local Area Network Converter Control Unit Battery Voltage Power Supply Circuit
  • Common Misdiagnosis: Faulty battery or alternator instead of issues with the CAN converter control unit.

 

Common Diagnostic Steps

• OBD2 Code: C1177
• Description: Control Area Network Local Area Network Converter Control Unit Battery Voltage Power Supply Circuit
• Common Diagnostic Steps:
  1. Check the battery voltage and ensure it is within the specified range.
  2. Inspect the wiring and connectors related to the CAN LAN converter control unit for any signs of damage or corrosion.
  3. Test the power supply circuit to confirm proper voltage is reaching the control unit.
  4. Examine fuses related to the CAN LAN converter control unit and replace if necessary.
  5. Use a scan tool to check for additional fault codes that may indicate related issues.
  6. If all physical checks are satisfactory, consider testing or replacing the CAN LAN converter control unit itself.