DTC Advanced Diagnostics: P003A
DTC P003A:Turbocharger Wastegate Control Actuator Position Exceeded Learning Limit

General Description
The closed mechanical stop position of the turbocharger wastegate control actuator is learned by pressing the turbocharger wastegate control actuator with a constant duty cycle against the closed mechanical stop. A range check of the mechanical stop voltage of the turbocharger wastegate control actuator position sensor is performed at first initialization and during the driving cycle. If the turbocharger wastegate control actuator position is abnormal, the powertrain control module (PCM) detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type
Execution
Once per driving cycle
Sequence
None
Duration
0.5 second or more
DTC Type
One drive cycle, MIL on

Enable Conditions
Condition
Minimum
Maximum
12 volt battery voltage [Battery]
10 V
–
Vehicle
ON mode
[ ]: HDS Parameter

Malfunction Threshold
The actual learned turbocharger wastegate control actuator position sensor voltage at mechanical stop at offset learning is less than 0.59 V or higher than 2.56 V.

Possible Cause
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
Turbocharger wastegate control actuator position sensor failure
Turbocharger wastegate control actuator stuck
PCM internal circuit failure

Confirmation Procedure
Operating Condition
Turn the vehicle to the ON mode.

With the HDS
Select the Electric Waste Gate in the INSPECTION MENU with the HDS.

Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory.

Conditions for clearing the DTC
The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command.