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03 December, 2025

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PACCAR PX-6 CM2150 (2007-09) Fault Code: 249 PID: 171 SPN: 171 FMI: 3 Ambient Air Temperature Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at ambient air temperature circuit.

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: 252 PID: 98 SPN: 98 FMI: 2 Engine Oil Level – Data Erratic, Intermittent, or Incorrect. An intermittent signal is being received from the oil level sensor.

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: 253 PID: 98 SPN: 98 FMI: 1 Engine Oil Level – Data Valid But Below Normal Operational Range – Most Severe Level. Very low oil level has been detected by the oil level sensor.

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: 2554 PID: 131 SPN: 1209 FMI: 2 Exhaust Gas Pressure – Data Erratic, Intermittent, or Incorrect. The exhaust gas pressure sensor is reading an erratic value at initial Key On.

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: 2555 PID: SID 070 SPN: 729 FMI: 3 Intake Air Heater 1 Circuit – Voltage Above Normal or Shorted to High Source. High voltage detected at the intake air heater signal circuit.

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

03 December, 2025

0 comments

PACCAR PX-6 CM2150 (2007-09) Fault Code: 2556 PID: SID 070 SPN: 729 FMI: 4 Intake Air Heater 1 Circuit – Voltage Below Normal or Shorted to Low Source. Low voltage detected at the intake air heater signal 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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