Verify the ECM calibration is correct. Check the calibration revision history found on QuickServe™ Online for applicable corrections to the calibration stored in the ECM. If necessary, calibrate the ECM.
This is an informational fault code indicating that the VGT actuator was unable to go to the desired position at key ON. While active, the ECM will continuously attempt to restore normal VGT operation until the engine coolant temperature reaches 74°C [165°F].
If the condition continues to exist after the coolant reaches 74°C [165°F], Fault Code 2387 will become active and Fault Code 3616 will become inactive. Fault Code 2346 may set due to a resulting fueling derate.
Inspect the turbocharger vanes for residue, and clean the vanes, if required. Find the source of the residue and repair.
1)Inspect the grid heater for damage or plugging. If found damaged, replace the grid heater and inspect the air handling system for debris.
2)Replace the turbocharger assembly.
3)If necessary, calibrate the ECM.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2973 PID: 102 SPN: 102 FMI: 2 Intake Manifold 1 Pressure – Data Erratic, Intermittent, or Incorrect. The ECM has detected an intake manifold pressure signal that is too high or low for present engine operating conditions.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2964 PID: 105 SPN: 105 FMI: 0 Intake Manifold 1 Temperature – Data Valid but Above Normal Operational Range – Least Severe Level. Intake manifold air temperature signal indicates intake manifold air temperature is above engine protection warning limit.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2963 PID: 110 SPN: 110 FMI: 0 Engine Coolant Temperature – Data Valid But Above Normal Operational Range – Least Severe Level. Engine coolant temperature is above the engine coolant temperature engine protection warning limit.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2962 PID: 412 SPN: 412 FMI: 0 Exhaust Gas Recirculation Temperature – Data Valid But Above Normal Operational Range – Moderately Severe Level. EGR temperature has exceeded the engine protection limit.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2961 PID: 412 SPN: 412 FMI: 0 Exhaust Gas Recirculation Temperature – Data Valid But Above Normal Operational Range – Least Severe Level. EGR temperature has exceeded the engine protection limit.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2813 PID: 146 SPN: 2791 FMI: 14 EGR Valve Control – Special Instructions. The EGR valve has been closed during regeneration of the aftertreatment diesel particulate filter.
