P003A GMC - Turbocharger/Supercharger Boost Control 'A' Position Exceeded Learning Limit
- Turbocharger or supercharger vane adjustment
- Faulty turbocharger or supercharger
User Submitted Video
- Engine Light ON (or Service Engine Soon Warning Light)
P003a Gmc DescriptionThe position of the turbocharger vanes is controlled by the Engine Control Module (ECM). The ECM utilizes a turbocharger vane control solenoid valve and a turbocharger vane position sensor to control the turbocharger vanes. The ECM will vary the boost dependant upon the load requirements of the engine. The vane control solenoid valve uses 2 circuits, a high voltage control circuit and a low reference circuit. The ECM uses a pulse width modulation (PWM) on the high control circuit to control the solenoid valve. The ECM provides a ground on the low reference circuit. The ECM will detect if the automatic turbocharger learn has failed or the commanded position of the turbocharger vanes does not match the actual position by more than 15 percent.
Need more help?Get the P003a Gmc code diagnosed by a professional: Find a repair shop in your area
P003A GMC CommentsHelp us improve AutoCodes.com. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P003a Gmc code? Have you replaced any parts?
Any information is appreciated. Thanks