DTC P003A (LCD, LBX, LBS)
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DTC P003A (LCD, LBX, LBS)
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DTC P003A 00
Turbocharger Vane Position Not Learned
Circuit/System Description
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The engine control module (ECM) performs the turbocharger learn procedure automatically when the enabling criteria have been met. After each ignition cycle, and before the enable criteria have been met, the ECM will use the previously learned value. If the ECM does not have a previously learned value, it will default to a stored calibrated value.
The ECM commands the turbocharger vane control solenoid to position the turbocharger vanes, and a turbocharger vane position sensor monitors the actual position of the vanes. The ECM varies the boost dependant upon the load requirements of the engine.
Conditions for Running the DTC
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The battery voltage is equal to or greater than 11 V.
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The ECM is commanding the turbocharger vanes open or closed during a position learn process.
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The engine speed is between 750-850 RPM.
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The engine coolant temperature (ECT) is between 73-96°C (163-205°F).
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DTC P003A runs once per key cycle when the above conditions are met.
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Conditions for Setting the DTC
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The engine control module (ECM) determines that the difference between the turbocharger desired vane position sensor and the actual turbocharger vane position exceed a calibrated threshold during a valid learn event.
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The above condition is met.
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Action Taken When the DTC Sets
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DTC P003A is a Type C DTC.
Conditions for Clearing the DTC
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DTC P003A is a Type C DTC.
If any service has been performed on the turbocharger or on the turbocharger components, a turbocharger relearn must be performed. Failure to perform the turbocharger learn procedure may cause other DTCs to set.
The turbocharger learn procedure is required when the following service procedures have been performed:
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Turbocharger vane position control solenoid valve replacement
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Turbocharger vane position sensor replacement
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Turbocharger replacement
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Any service that disturbs the turbocharger components
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Schematic Reference
Engine Controls Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Turbocharger System Description
Electrical Information Reference
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References
for scan tool information
Circuit/System Verification
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Note
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Once the enable conditions have been met the throttle must remain at idle. Do not change the accelerator pedal position (APP) during this procedure.
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1.
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The following conditions must be met for the ECM to perform the turbocharger learn procedure:
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The vehicle is in Park or Neutral.
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Start and idle the engine.
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The ECT is greater than 40°C (104°F).
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3.
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Verify the DTC does not reset.
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4.
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If the DTC resets, replace the K20 Engine Control Module.
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Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
Control Module References
for Engine Control Module replacement, setup, and programming