Fault Code 215, Transmission Air Supply Pressure Sensor (TASPS) - Endurant HD, XD, PACCAR TX-12, TX-18

Date: August 8, 2024

Updated: January 15, 2026

Issue Description:

Customers may report transmission service lamp on with the following fault code information:

Note: This service bulletin only applies to the fault code, SPN and FMIs indicated above.

Affected Models/Population:

MTM Type PS-490, PS-496

Verify ServiceRanger Version:

1. Open ServiceRanger, vehicle connection is not required.

2. Go To Settings.

3. Select License.

4. Record ServiceRanger Version: 4.##.####

• If version is less than 4.12, go to RRMT-0041: ServiceRanger 4 Software Upgrade - Download and Install Procedure and update to latest version. Then go to Field Strategy.
• If version is equal to or greater than 4.12, go to Field Strategy.

Field Strategy:

Procedure A:

Create a Service Activity Report

• Key on.
• Connect ServiceRanger.
• Create a Service Activity Report.
• Select Send to Eaton (internet connection required).
• Go to Procedure B.
  • Identify MTM information with ServiceRanger or MTM Parts Label.

Procedure B - Identify MTM Type:

Identify MTM information with ServiceRanger:

• Select “Configuration”.
• Select “Advanced” and record MTM Type - Current Value:
• Compare MTM Type in table:

- or -

Identify MTM with MTM Parts Label:

1. Record MTM Part Number and Serial Number.

2. Compare MTM Part Number in table:

Procedure C - Confirm the vehicle air system is functioning properly:

• Key on with engine running.
• Allow vehicle air pressure to build to governor cut off.
• Monitor in-dash vehicle pressure gauge and record value in table.
  • If reading is out-of-range, refer to OEM guidelines and verify operation and maintenance of the vehicle air system; this service bulletin does not apply.
  • If reading is in-range, go to Step 4.
• Key on with engine running.
• Connect ServiceRanger.
• Go To “Data Monitor”.
• From the Default Parameter Files, select “Transmission Pressure” or “Transmission and Vehicle Air Supply Pressure”.
• In ServiceRanger, monitor 520524 - Line Pressure Feedback and record value (psi/kPa) in table.
• Compare reading in table.
  • If reading is constant and in-range, TASPS is properly reporting vehicle air pressure. The vehicle air system experienced a low air pressure event; this service bulletin does not apply. Do not replace the TASPS.
  • If reading is erratic and/or out of range, go to Procedure D.

Procedure D:

1. Based on OEM, determine next step.

• If OEM is International, Kenworth, Peterbilt or Volvo (Mack), go to Step 2.
• If OEM is Freightliner or Western Star, go to RRMT-0055: Transmission Air Supply Pressure Sensor (TASPS) Replacement Service Procedure - Endurant HD, XD and PACCAR TX-12, TX-18 and replace TASPS.

2. Key on with engine off.

3. Connect ServiceRanger.

4. Go To Programming.

5. Under Hardware Information, record TCM part number:

• If TCM part number is equal to or greater than 10003852, go to Step 6.
• If TCM part number is less than 10003852, go to RRMT-0055: Transmission Air Supply Pressure Sensor (TASPS) Replacement Service Procedure - Endurant HD, XD and PACCAR TX-12, TX-18.

6. Under Software Information, record TCM software part number in table.

7. Compare the Transmission Model, OEM and TCM software part recorded in Step 6 with Software part number in table below.

• If TCM software part number is less than part number in table below, go to Step 8.
• If TCM software part number is equal to or greater than part number in table below and ServiceRanger indicates 215 FMI 10 and/or 21 - This indicates the TCM is using the reported air pressure information from other vehicle sources to verify sufficient air pressure is available for normal transmission operation. No further action is required.

8. Based on Transmission Model, determine next step.

• If Endurant HD or XD, go to Procedure E.
• If PACCAR TX-12 or TX-18, go to Procedure F.

Procedure E:

1. Compare the OEM in the table below and determine the Available Updates software package.

In the ServiceRanger Programming screen:

• From the Available Updates, select the software package.
• Select “Confirm” and follow on-screen prompts. Process complete.

Note: After the update to TCM software 5541082 and 5541090, ServiceRanger may indicate 215 FMI 10 and/or 21. This indicates the TCM is using the reported air pressure information from other vehicle sources to verify sufficient air pressure is available for normal transmission operation. No further action is required.

Procedure F:

1. Update any necessary TCM parameter changes with DAVIE4 prior to updating TCM software with ServiceRanger.

2. Key on with engine off.

3. Connect ServiceRanger.

4. Go to Programming.

5. In the ServiceRanger Programming screen:

• From the Available Updates, select the software package in the table below.
• Select “Confirm” and follow on-screen prompts. Process complete.

*It is advised not to update the TCM using DAVIE4 after completing an update with ServiceRanger. Updating the TCM with DAVIE4 after using ServiceRanger may revert the software to an earlier version.

Note: After the update to TCM software 5541089, ServiceRanger may indicate 215 FMI 10 and/or 21. This indicates the TCM is using the reported air pressure information from other vehicle sources to verify sufficient air pressure is available for normal transmission operation. No further action is required.

Warranty Information:

Warranty Parts:

• No parts

Warranty Labor (ECWY3000):

• TCM Software Update:
  • Diagnostics (Up to 1.0 hour)
  • Software Update (Up to 0.3 hour)
  • Verify Repair Road Test (Up to 0.3 hour)

General Claim Coding

TCM software update only:

- Line Item tab - Repair Line List

• Primary Casual Part #: 10005053 (SENSOR, AIR PRESSURE)
• Secondary Casual Part #: N/A
• Complaint Code: Varies
• Failure Mode Description: AIR PRESSURE SENSOR-APS-READING INCORRECT PRESSURE (TFM-0538)
• Responsibility Code:
  • RTW COMMITMENT (601) for RTW claims
  • Vendor Part (418) for all others
• Part Return Instructions: Per OEM or RTW Instructions

The material contained in this bulletin is product improvement information. Eaton Corporation is not committed to, or liable for, canvassing existing products.

FSUD: 4552