The Cummins fault code 2764 troubleshooting document is a 3-page factory diagnostic reference for the Cummins ISM and ISX CM871 (2007-09) engine platform, covering exhaust gas pressure high (SPN 1209, FMI 16). This fault code sets when exhaust gas pressure is above the normal operating range at a moderately severe level. This page summarises what the manual contains so a technician can confirm it matches the code before downloading.
Official document details
| Brand | Cummins |
| Model coverage | ISM & ISX CM871 (2007-09) |
| System / group | ISM CM871 (2007-09) / DTCs |
| Circuit | ISX and ISM Exhaust Gas Pressure Sensor Circuit |
| Fault identifiers | SPN 1209 · Lamp AMBER · FMI 16 |
| Source | TruckFaultCodes.com (© 2017) |
| Pages | 3 |
| File size | 0.1 MB |
| Format | |
| Language | English |
Cummins fault code 2764 overview
This fault code sets when exhaust gas pressure is above the normal operating range at a moderately severe level. The exhaust gas pressure sensor measures pressure in the exhaust manifold on a 5-volt circuit, and the ECM uses the value to control emissions and EGR valve operation. Verify the ECM calibration is correct.
The document lists possible causes including:
- A malfunctioning variable geometry turbocharger
- A damaged in-range exhaust gas pressure sensor
- A plugged or restricted aftertreatment diesel particulate filter
- A plugged or restricted EGR cooler
- Water intrusion in the exhaust gas pressure sensor connector
Document table of contents
- Description
- Shop Talk
- Component Location
- Troubleshooting Steps
Applicable truck models covered
This procedure applies to Cummins ISM and ISX engines built on the CM871 (2007-09) electronic control platform, as fitted by truck makers using this Cummins driveline. The exhaust gas pressure sensor is above the front section of the exhaust manifold and plumbed into it. For wiring, connector, and CPL detail, refer to the Cummins official engine support site or the OEM service manual.
Who needs this Cummins fault code 2764 manual
Fleet technicians and workshop owners diagnosing high exhaust gas pressure on ISM or ISX CM871 engines use this reference to follow the factory step order instead of guessing at the exhaust gas pressure circuit. The full PDF is available in the DiagTechPro manuals library, and a free account is required to download.
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