Buy wp20405 - Genuine Cummins ACM Aftertreatment Control Module - wisentpartscenter.com

Description

2888101 is a Genuine Cummins ACM / Aftertreatment Control Module used on select Cummins ISB6.7L aftertreatment systems. This module is part of the emissions control system and communicates with the engine ECM and aftertreatment components to support DEF dosing, SCR operation, DPF regeneration, and related sensor communication. Verify 2888101 by ESN, original module number, truck application, connector layout, and the cross-reference / supersession list shown on this page. Electronic modules should not be ordered by appearance only, because the wrong ACM can create communication faults, programming issues, or repeat aftertreatment derates.

Purpose of the Part

The ACM helps control and monitor the aftertreatment system. It receives and sends signals related to DEF/SCR operation, DPF temperature monitoring, NOx sensor communication, and regeneration control. When the ACM, wiring, power supply, or data link fails, the truck may set aftertreatment communication faults, disable DEF dosing, limit regeneration, or go into derate.

Issue Symptoms / When to Replace

Common signs that 2888101 may need inspection or replacement include:

  • Check engine light or aftertreatment warning light
  • DEF/SCR system faults that return after wiring and sensors are checked
  • DPF regeneration problems or incomplete regen
  • Engine derate related to aftertreatment communication
  • Lost communication with aftertreatment components
  • Corrosion, water intrusion, damaged pins, or burnt connector terminals at the ACM
  • No power, poor ground, or intermittent communication at the module

Possible related Cummins aftertreatment communication codes may include 2771, 3232, 4151, 4152, 4572, 4677, and 3597, depending on ECM calibration and application. These codes do not prove the ACM is bad by themselves. Check power, ground, connectors, harness condition, data link circuits, sensors, and calibration before replacing the module.

Brand Information

Cummins is the OEM engine manufacturer for the ISB6.7L platform and supplies engine, electronics, emissions, fuel, air-handling, and aftertreatment components. For an aftertreatment control module, Genuine Cummins is preferred because the module must communicate correctly with the ECM, sensors, DEF system, and SCR/DPF hardware. Incorrect or poorly matched electronics can create repeat diagnostics, derates, and extra downtime.

Installation Notes

Before replacing 2888101, confirm the ESN, original module number, application, and supersession list shown on this page. Disconnect battery power before removal. Inspect the mounting area, harness connector, pins, grounds, fuses, relays, and aftertreatment data link wiring. Install the replacement module without forcing the connector or housing. After installation, use Cummins INSITE / QuickServe procedures to confirm programming, calibration, active faults, and aftertreatment system operation. Clear codes only after the root cause is repaired.

How to Identify an OEM Part

A Genuine Cummins 2888101 ACM should be verified by the Cummins part-number label, Bosch / Denoxtronic identification when present, connector style, housing design, and original packaging. Match the module to the removed unit and to the cross-reference / supersession list shown on this page. Common related Bosch-style numbers may appear with spaces or without spaces, such as 0-281-020-196 and 0281020196, so compare the full number carefully.

Why buy from Wisent Parts
  • ⏱️
    Fast shipping
    Orders before 12PM EST ship same business day.
  • 🛡️
    180-day warranty
    All parts covered from delivery date.
  • ↩️
    Easy returns
    30-day returns.
  • ✅
    Verify fitment
    Send VIN/ESN and we’ll confirm.

Shop with confidence

Warrany & Return Information

Warranty Information

Wisent Parts offers a 180-day warranty on all parts from the date of delivery. This warranty covers orders placed directly through our website. If a part fails during this period, we’re here to help - whether it’s a replacement, repair, or refund. For full details, refer to the Warranty page.

Return Information

All electrical parts and final sale items are non-refundable and cannot be returned. Please double-check compatibility before purchase. If you have questions, our support team is here to help before you place your order.

Cummins

Genuine Cummins parts for heavy-duty trucks. Browse OEM Cummins turbochargers, turbo actuators, fuel injectors, fuel pumps, EGR components, sensors, and more for ISB 6.7L, ISX15, ISL 8.9L, and other Cummins diesel engines.

View all