TSB190165-042020
Service Bulletin Details
Public Details for: TSB190165-042020
This technical service bulletin describes the verification and resolution to address soot deposits in the intake air connection exhaust gas entrance ports that affects exhaust gas recirculation flow measurements. This is an update to a prev
- 9999 -
Models from 9999
9999 CUMMINS B6.7 |
9999 CUMMINS L9 |
4/30/2021 Soot or Ice Deposits in the Intake Air Connection and Fault Codes: 1866, 3361, 3382, 3383, 3389, 7232, 7233 and/or 4729 Technical Service Bulletin Technical Service Bulletin: TSB190165 Released Date: 20-Apr-2021 Soot or Ice Deposits in the Intake Air Connection and Fault Codes: 1866, 3361, 3382, 3383, 3389, 7232, 7233 and/or 4729 Soot or Ice Deposits in the Intake Air Connection and Fault Codes: 1866, 3361, 3382, 3383, 3389, 7232, 7233 and/or 4729 Warranty Statement The information in this document has no effect on present warranty coverage or repair practices, nor does it authorize TRP or Campaign actions. Contents Product Affected B6.7 CM2350 B121B B6.7 CM2450 B155B L9 CM2350 L116B L9 CM2350 L123B L9 CM2450 L126B Issue Symptom: Active or multiple inactive counts of Fault Codes: 1866, 3361, 3382, 3383, 3389, 7232, 7233 and/or 4729 Root Cause: Soot deposits in the intake air connection exhaust gas entrance ports are present and have affected EGR flow measurements. https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2019/tsb190165.html 1/4 4/30/2021 Soot or Ice Deposits in the Intake Air Connection and Fault Codes: 1866, 3361, 3382, 3383, 3389, 7232, 7233 and/or 4729 Soot deposits in the intake air connection exhaust gas recirculation (EGR) differential pressure horizontal and vertical ports are present and have affected EGR flow measurements. Icing/condensation in the intake air connection exhaust gas recirculation (EGR) differential pressure sensor or horizontal and vertical ports are present and have affected EGR flow measurements. Icing may not be present at the time of the repair, but presence of condensation/water droplets in the EGR Differential Pressure sensor indicates that icing of the sensor is the root cause of this issue. Verification Active or multiple inactive counts of Fault Codes: 1866, 3361, 3382, 3383, 3389, 7232, 7233, and/or 4729. Resolution Thoroughly clean the intake air connection exhaust gas entrance ports and exhaust gas recirculation (EGR) differential pressure horizontal and vertical ports. See Service Bulletin, Exhaust Gas Recirculation (EGR) System Intake Air Connection Inspection and Cleaning Guidelines, Bulletin 5579934. (/qs3/pubsys2/xml/en/bulletin/5579934.html) Care should be taken to follow all guidelines/examples of proper cleaning in Service Bulletin (/qs3/pubsys2/xml/en/bulletin/5579934.html) (/qs3/pubsys2/xml/en/bulletin/5579934.html). Insufficient cleaning has resulted in repeat occurrences of these fault codes. Inspect the intake air heater for carbon build up. See corresponding Service Manual. Reference Procedure 010-023 in Section 10. Inspect the EGR differential pressure sensor. See corresponding Service Manual. Reference Procedure 019-370 in Section 19. If soot is found, gently wipe away with a clean towel. Be sure not to apply too much pressure on the sensor elements, as they can become damaged. If ice or condensation is found (See Figure 1 below), gently wipe away with a clean towel. Be sure not to apply too much pressure on the sensor elements, as they can become damaged. If the EGR differential pressure sensor meets specifications according to published troubleshooting, do not replace the EGR differential pressure sensor. Verify the EGR differential pressure sensor is properly oriented and placed as removed when installed on the intake air connection. Follow the “Conditions For Clearing The Fault Code” section in corresponding fault code overview to validate the repair. Verify fault code is no longer active. If fault code is still active, reference the corresponding fault code troubleshooting tree. Check ECM Calibration Revision History. Compare the ECM code and revision number in the ECM to the calibration revision listed in the ECM calibration revision history for this fault code. If a calibration update for this fault code is available, the ECM calibration revision must be that revision or higher. https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2019/tsb190165.html 2/4 4/30/2021 Soot or Ice Deposits in the Intake Air Connection and Fault Codes: 1866, 3361, 3382, 3383, 3389, 7232, 7233 and/or 4729 Figure 1, Condensation on the EGR Differential Pressure Sensor. Document History Date Details 2019-9-20 Module Created 2020-6-1 Updated title, product affected, issue, verification, and resolution sections. 2020-9-22 Added FC7233. 2020-9-24 Updated text. 2020-9-28 Corrected title to include mention of ice. https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2019/tsb190165.html 3/4 4/30/2021 Soot or Ice Deposits in the Intake Air Connection and Fault Codes: 1866, 3361, 3382, 3383, 3389, 7232, 7233 and/or 4729 Date Details 2021-3-1 Added B6.7 CM2450 B155B and L9 CM2450 L126B. 2021-4-19 Added Fault Code 7232. Last Modified: 20-Apr-2021 https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2019/tsb190165.html 4/4