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View Full Version : Cummins Aftertreatment Fault 1679 and 1682



Apsik
8th September, 2016, 11:10 AM
Hi.
I have following fault codes on an ISBe4 engine.
As far as I know 1682 can be cleared after the SCR system is cleaned and "Diesel Exhaust Fluid Doser Pump Override Test" performed
About 1679 I found following info:

Fault code of 1679 and/or 3651. Early production of 2010 Cummins SCR ‐ DEF system buses contained some faulty DEF tank temperature sensors which prevented the DEF from thawing and the SCR system from priming for DEF dosing. This resulted in a common fault code of 1679 and/or 3651 . This caused an un ‐ erasable/un ‐ resettable fault code that could only be resolved with a complete re ‐ calibration of the ECM. This temperature sensor issue within the DEF tank was corrected in January 2011 with any DEF head with a serial number greater than 7775
Can you help me to get recalibration file for my engine? SN: 21927659. Calib: AP90052.12

Any other suggestions how to fix this issue and avoid those codes in future?

Regards

ntom
3rd October, 2016, 06:41 AM
Did you figure out the solution?
I have problem with ISBe4 SCR also!
Can you help me with wiring diagrams for this system, please?

The system is installed onto 2007 Nissan Atleon 80.190, There are 9 faultcodes:
Cummins - ISBe Euro 4, 4 cylinder engine)
3226-0 - NOx sensor - Above upper regulation limit threshold, Cummins code 2772
3363-1 - AdBlue tank heater - Below lower regulation limit threshold, Cummins code 1712
1761-4 - AdBlue tank level - Voltage too low or short circuit too lower voltage, Cummins code 1668
3031-3 - AdBlue temperature - Voltage too high or short circuit too higher voltage, Cummins code 1678
3362-11 - AdBlue metering module - Internal ECU communication error, Cummins code 1682
3489-4 - Aftertreatment air enable actuator - Voltage too low or short circuit too lower voltage, Cummins code 1698
3234-9 - NOx sensor, Cummins code 2771
627-2 - Supply voltage - Data erratic, intermittent or incorrect, Cummins code 434
3449-3 - AdBlue tank heater - Voltage too high or short circuit too higher voltage Cummins code 1683

Apsik
2nd February, 2017, 04:34 PM
Did you figure out the solution?
I have problem with ISBe4 SCR also!
Can you help me with wiring diagrams for this system, please?

Hi
sorry for such late answer but I did fix it and I do not have wiring diagrams.
In my case the DEF temp sensor was indeed faulty. I did install an AdBlue Emulator and after DEF pump test I cleared both codes.