Construction Machine EGR Fault Solution
We solve power loss, black smoke and warning-light problems caused by the EGR valve and EGR cooler on construction machines with ECU software. The cause of the fault is diagnosed first and the original software is backed up.
On construction machines the engine runs for long hours at constant rpm and often under light load; the EGR circuit soots up quickly in these conditions. The symptoms are slower hydraulic response, rpm drop under load and higher fuel consumption.
The EGR system returns part of the exhaust gas to the intake. That gas carries soot; over time the valve, the cooler and the intake manifold become coated with it. When the valve sticks the engine cannot draw clean air: power drops, smoke increases, idle becomes unstable and the ECU stores a fault.
When the EGR cooler is perforated, coolant passes to the exhaust side and the engine starts losing coolant; in that case software alone is not the answer and the cooler has to be bypassed or replaced. We tell you which job is right after diagnosis.
When is it needed?
- EGR valve fault and soot build-up
- Rough idle, smoke, power loss
- Carbon build-up in the intake manifold
Typical duration: 1–2 hours
Construction Machine EGR solutions by make
Makes with a verified EGR solution in our library. Choose your make to see the ECU models used and the other services available.
Construction Machine EGR Fault Solution: supported ECU list
Engine ECUs with a verified solution for this service in our library, and the makes they are used in. If your ECU is not listed, send us a photo of the label and we will check on the file.
| ECU | Makes |
|---|---|
| BOSCH EDC16C39 | Aebi Schmidt |
| DELPHI DCM3.7 | Bobcat |
| CONTINENTAL CM2350A | Zoomlion, XCMG |
| DELPHI DCM7.24 | JCB |
| BOSCH EDC17C49 | Manitou |
| DELPHI DCM3.3 / DCM3.3+ | JCB |
| BOSCH EDC17C87 | Bobcat, Doosan |
| BOSCH EDC17CV42 | Albach |
| BOSCH EDC17CV52 | Terex |
| BOSCH EDC17C81 | Xinchai |
| BOSCH EDC17CP20 | Linde |
Send us this for a quick diagnosis
If you include the following when you message us on WhatsApp, we can confirm compatibility and the work needed the same day.
- Make, model and model year
- A photo of the dashboard warning or the fault code
- A photo of the engine ECU label
- When the fault started and what has been done so far
- For on-site service: province, district and location
Frequently asked questions
What are the symptoms of a construction machine EGR fault?
Does an EGR fault affect the DPF?
How long does the job take?
Can the original software be restored?
Does the EGR job give the machine more power?
The machine is losing coolant. Could it be related to the EGR?
Other solutions for the Construction Machine
Prepare this file in your own workshop: ECU Prime
ECU Prime is chiptuning software that recognises the original ECU file you read with your tool and applies the operation you choose. The checksum is corrected in the same flow.