Case IH 2724 – ZTC: ZTC - CAN message EHR signal TEH error or not available (total engine hours)

The module is failing to receive a valid signal broadcasting the total engine hours over the CAN network, or the data is marked as not available.

• Steiger T4B
• CS
• Magnum
• Maxxum
• Optum
• Puma

1. 1

   Verify the CAN bus communication lines between the Engine ECU (which broadcasts engine hours) and the receiving modules.

2. 2

   Check for damaged wiring, loose connectors, or corrosion at the module harnesses.

3. 3

   Check for other active CAN bus fault codes that might indicate a broader network failure rather than an isolated module issue.