P2563 on Chevrolet: How to Diagnose & Fix
Turbocharger Boost Control Position Sensor "A" Circuit Range/Performance
1 Chevrolet model · 1 documented issue · 1 critical · $50-$1,800 repair
P2563 on Chevrolet by model: symptoms, diagnosis and fix
The 1.4L turbo's wastegate is operated by an external actuator whose arm pivots on a small pin retained by a light clip. The pin wears and the clip can work its way off entirely, letting the wastegate flapper drift open when it should be closed. Boost bleeds off, the ECM sees a target it cannot reach, and P0299 underboost sets - often with an audible rattle from the exhaust housing at light throttle. Owners on Sonic Owners Forum have documented the missing-clip failure specifically, and the wear condition is described as showing up from roughly 15,000 miles onward. This is routinely misdiagnosed as a completely dead turbocharger and quoted as a full turbo replacement. On 2017-2018 Sonics GM opened special coverage N232395330 extending turbocharger coverage to 10 years / 120,000 miles for turbo failure.
Common Symptoms
- Check engine light with underboost code
- Noticeable loss of power, car feels naturally aspirated
- Reduced power / limp mode on hard acceleration
- Rattling or fluttering from the turbo area at part throttle
- Poor merging and hill-climbing performance
How to Fix
Before condemning the turbo, inspect the wastegate actuator arm with the engine off: the clip should be present, and the arm should have no slop on the pivot pin. Grab the arm and check for lateral play. A missing clip is a few-dollar fix; re-clip the arm and set the actuator rod to the specified preload. A worn pin or leaking actuator diaphragm can often be corrected with a replacement or upgraded aftermarket wastegate actuator instead of a whole turbo. Critically, verify the PCV system first - a ruptured valve cover diaphragm or failed intake manifold check valve also produces P0299 and can destroy a new actuator, so fixing the turbo side without fixing the PCV side just repeats the failure. If the turbo itself has shaft play or is oil-soaked, check the 2017-2018 special coverage before paying out of pocket.
Sources for this issue (4)
- The case of the missing wastegate clip - Sonic Owners Forumforum
- What are the symptoms of the wastegate pin problem? - Sonic Owners Forumforum
- Special Coverage N232395330 Turbocharger Replacement (NHTSA-hosted GM bulletin)article
- Some 2017-2018 Chevy Sonic Units Need A Turbocharger Replacement - GM Authorityarticle
P2563 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P2563 mean on a Chevrolet?
P2563 stands for "Turbocharger Boost Control Position Sensor "A" Circuit Range/Performance." This generic powertrain code sets when the PCM/ECM detects that the signal from the turbocharger boost control position sensor (which reports the position of the variable-vane or wastegate actuator) is out of the expected range or does not respond as commanded. It indicates the module cannot confirm the turbocharger boost control mechanism is moving to the position it requested, often pointing to a vane/actuator position-sensing or boost-control fault. On Chevrolet it is documented across 1 model: Sonic.
What are the most common causes of P2563?
The most common causes of P2563 are: Faulty turbocharger boost control (vane) position sensor, Sticking or seized variable-vane mechanism or wastegate actuator, Failing turbocharger boost control solenoid/actuator, Wiring or connector faults (open, short, corrosion, chafing) in the sensor circuit, Carbon buildup binding the turbo vanes (common on diesels), Poor PCM/ECM ground or, rarely, a failed control module. The specific cause varies by vehicle.
How much does it cost to fix P2563 on a Chevrolet?
Published repair estimates on Chevrolet range from $50 to $1,800 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P2563 on a different make?
View P2563 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.