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DTC B1200: Communication Bus Line Error Honda Odyssey III

Communication Devices ~145 words

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

  1. Clear the DTCs with the HDS.
  2. Turn the ignition switch OFF, and then back ON (II).
  3. Wait for 6 seconds or more.
  4. Check for DTCs with the HDS. Is DTC B1200 indicated? YES - Go to step 5. NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections at the A/C control panel connector (22P) or climate control unit connector (30P), and at driver's under-dash fuse/relay box connector N (45P).
  5. Check for DTCs with the HDS. Is DTC B1000 also indicated? YES - Troubleshoot DTC B1000. NO - If only B1200 is indicated, replace the climate control unit or A/C control panel.

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