Deutz EMR3 Engine Error Code 19 / 676 / ArHtCD_NoLd – Solution Guide

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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