P0245 on Buick
Turbocharger/Supercharger Wastegate Solenoid "A" Circuit Low
P0245 on Buick vehicles indicates turbocharger/supercharger wastegate solenoid "a" circuit low. Au7o has documented this code across 1 Buick model — most commonly on Encore GX. This code sets when the engine control module sees an abnormally low voltage (a short to ground or open) on the control circuit for turbocharger/supercharger wastegate solenoid "A." The wastegate solenoid regulates boost pressure by controlling the wastegate that bleeds off exhaust pressure. When the circuit reads low, the computer can no longer trust its control of boost, which can affect power and emissions. Typical repair costs on Buick range from $900 to $2,400, depending on the specific model and root cause.
Common Causes of P0245
- •Faulty wastegate solenoid (internally shorted)
- •Wiring shorted to ground in the solenoid circuit
- •Corroded or loose solenoid connector
- •Open or damaged control wiring
- •Failed PCM/ECM driver circuit (less common)
- •Vacuum/boost line issues affecting the solenoid
P0245 on Buick by Model
Buick Encore GX(1 issue)
- Turbocharger Wastegate Actuator Failure Causing "Engine Power Is Reduced" and Underboost (P0299)2020-2025
The single-scroll turbocharger used on both the 1.2L LIH and 1.3L L3T three-cylinder engines suffers wastegate actuator and internal turbo failures. The electric wastegate actuator loses calibration or the linkage binds from heat cycling and carbon, so the ECM can no longer hold commanded boost. The module sets an underboost fault, drops the vehicle into a reduced-power limp mode, and in the worst cases the turbo center section itself fails. NHTSA complaints on the Encore GX and its platform twin (Chevrolet Trailblazer) repeatedly describe the failure recurring after a first turbo replacement, indicating the replacement part shares the same weakness. Owners commonly report it first appearing under highway load or when merging.
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View P0245 across all makes →Frequently Asked Questions
What does P0245 mean on Buick?▼
P0245 stands for "Turbocharger/Supercharger Wastegate Solenoid "A" Circuit Low." This code sets when the engine control module sees an abnormally low voltage (a short to ground or open) on the control circuit for turbocharger/supercharger wastegate solenoid "A." The wastegate solenoid regulates boost pressure by controlling the wastegate that bleeds off exhaust pressure. When the circuit reads low, the computer can no longer trust its control of boost, which can affect power and emissions. On Buick specifically, this code is documented across 1 model.
What causes P0245 on Buick vehicles?▼
Common causes on Buick: Faulty wastegate solenoid (internally shorted), Wiring shorted to ground in the solenoid circuit, Corroded or loose solenoid connector, Open or damaged control wiring, Failed PCM/ECM driver circuit (less common). Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0245 on a Buick?▼
Repair costs on Buick range from $900 to $2,400, depending on the specific model and root cause.
Which Buick models have P0245 documented?▼
Au7o has documented P0245 on 1 Buick model: Encore GX.