Cummins fault code 2468 is the Cummins ISX11.9 CM2250 troubleshooting document for Engine Crankshaft Speed/Position – Data Valid But Above Normal Operating Range – Moderately Severe Level (SPN 102, FMI 3/3). This 8-page factory guide explains the circuit, the conditions that set the code, and the guided repair steps used with the INSITE electronic service tool. The air shutoff valve is an OEM installed component that shuts off the flow of air into the intake of the engine in order to prevent an engine overspeed condition.
Official document details
| Brand | Cummins |
| Model coverage | ISX11.9 CM2250/ISB6.7 CM2250/ISC8.3 and ISL9 CM2250/ISX15 CM2250 |
| System / group | ISX11.9 CM2250 (2010-12) / DTCs |
| Fault code | 2468 (PID P190) |
| SPN / FMI | 102 / 3/3 |
| Warning lamp | Amber |
| Bulletin number | 2883445 |
| Revision | Last modified 11-Jun-2010 |
| Pages | 8 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Cummins fault code 2468 table of contents
- Overview and circuit description
- Component location
- Conditions for running the diagnostics
- Conditions for setting the fault code
- Action taken when the fault code is active
- Conditions for clearing the fault code
- Shop Talk and possible causes
- Associated procedures table
- Guided troubleshooting steps
Applicable truck models
This troubleshooting procedure applies to Cummins ISX11.9 CM2250/ISB6.7 CM2250/ISC8.3 and ISL9 CM2250/ISX15 CM2250 engines. The air shutoff valve is an OEM-installed component, and is usually located on the air intake connection. Refer to the OEM service manual. The document states the code is set when ecm has detected that engine speed was greater than 2500 rpm for 0.25 seconds, or the operator manually tripped the engine air shutoff valve. When the code is active, the amber warning lamp is illuminated when this diagnostic runs and fails. Full specifications and procedure references are published by Cummins on the Cummins official website.
Who needs this Cummins fault code 2468 manual
Diesel technicians and workshop owners diagnosing Data Valid But Above Normal Operating Range – Moderately Severe Level on ISX11.9 CM2250 engines need this reference. The guide walks through each guided step and the INSITE electronic service tool tests required to validate the repair and clear the code.
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