Error Overview
This guide will walk you through resolving Deutz EMR3 engine error code 19 / 676 / ArHtCD_NoLd.
- Error Description: AIR HEATER – ECU does not detect switching on the air heater relay during the readback process.
- DEUTZ Error Code: 19
- Blink Code (short-long-short): 2 – 6 – 3
- SPN: 676
- Possible FMI:
- 12: Error mode not recognized
- 4: Voltage too low or short circuit to -Ubatt
Preparations:
Deutz Diagnostic Kit DECOM for Deutz Engine
2023 Deutz Serdia2010 v14.1.9.1 Diagnostic Software Free Download
Symptoms and System Reactions
- Error Indicator: Error lamp remains lit.
- System Reaction: Warning.
- Error Lamp Behavior: Continuously lit.
- Self-Healing: No.
- Signal Priority: 3.
Possible Causes
- Relay is energized, but feedback is missing on the sense line.
- Defective or incorrect wiring.
- Faulty pre-heating component.
- Damaged connecting cable.
Troubleshooting and Solutions
Using Deutz SerDia2010, take the following steps to resolve the issue:
- Check Wiring of Pre-Heating Component: Ensure all wiring connections are secure and correctly installed.
- Inspect the Relay: Verify that the relay is present and functional; replace if defective.
- Test the Pre-Heating Component: Confirm functionality; replace if necessary.
- Examine the Connecting Cable: Inspect for any signs of damage, and repair or replace if needed.
For more repair case of Deutz engine,please refer to:Deutz Engine Repair
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