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03 December, 2025

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PACCAR PX-6 CM2150 (2007-09) Fault Code: 2637 PID: SPN: 3050 FMI: 11 Catalyst Face Plugged – Root Cause Not Known. The front face of the aftertreatment diesel oxidation catalyst has been detected to be plugged with soot.

Verify the ECM calibration is correct. Check the calibration revision history found on QuickServe™ Online for applicable fixes to the...

03 December, 2025

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PACCAR PX-6 CM2150 (2007-09) Fault Code: 2638 PID: SPN: 3050 FMI: 13 Catalyst Efficiency – Out of Calibration. The temperature increase across the aftertreatment diesel oxidation catalyst is lower than expected.

Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on QuickServe™ Online for applicable...

03 December, 2025

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PACCAR PX-6 CM2150 (2007-09) Fault Code: 2639 PID: SID 324 SPN: 3251 FMI: 0 Aftertreatment Diesel Particulate Filter Differential Pressure – Data Valid But Above Normal Operating Range – Least Severe Level.

Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on Quickserve™ Online for applicable...

03 December, 2025

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PACCAR PX-6 CM2150 (2007-09) Fault Code: 2646 PID: 110 SPN: 110 FMI: 31 Engine Coolant Temperature – Condition Exists. The EGR valve was closed to reduce engine coolant temperature.

Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on QuickServe® Online for applicable...

03 December, 2025

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PACCAR PX-6 CM2150 (2007-09) Fault Code: 2659 PID: 110 SPN: 110 FMI: 31 Engine Coolant Temperature – Condition Exists. The EGR valve was closed to reduce engine coolant temperature.

Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on QuickServe® Online for applicable...

03 December, 2025

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PACCAR PX-6 CM2150 (2007-09) Fault Code: 271 PID: SID 126 SPN: 1347 FMI: 4 Fuel Pump Pressurizing Assembly 1 Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the fuel pump actuator circuit.

Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on QuickServe® Online for applicable...

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