P0751 on Subaru
Shift Solenoid A Performance/Stuck Off
P0751 on Subaru vehicles indicates shift solenoid a performance/stuck off. Au7o has documented this code across 2 Subaru models — most commonly on BRZ, WRX. This code means the transmission control module commanded Shift Solenoid A (sometimes called Shift Solenoid 1) but the transmission did not respond properly, with the solenoid acting as though it is stuck 'off.' Shift solenoids are electrically operated valves that direct hydraulic fluid pressure to engage gears, so when one underperforms the transmission may shift harshly, slip, or fail to change gears at the right time. The computer sets this code when the measured gear ratio or shift behavior does not match the commanded state. It generally indicates a hydraulic or performance issue with the solenoid or the fluid circuit it controls inside the automatic transmission. Typical repair costs on Subaru range from $800 to $2,000, depending on the specific model and root cause.
Common Causes of P0751
- •Stuck or failed Shift Solenoid A
- •Low, dirty, or degraded transmission fluid
- •Clogged solenoid screen or valve body passages
- •Sticking or worn valve body components
- •Wiring or connector problem at the solenoid
- •Internal transmission mechanical wear
- •Faulty transmission control module
P0751 on Subaru by Model
Subaru BRZ(1 issue)
- Throwout Bearing Noise and Premature Failure2013-2021
Manual transmission BRZs commonly develop throwout bearing (release bearing) noise, typically a chirping, squealing, or grinding sound when the clutch pedal is pressed or released. The noise is most apparent in cold weather and often appears between 20,000-60,000 miles. While the noise itself is mostly a nuisance, a failed throwout bearing can cause clutch disengagement problems. Subaru has not issued a recall, but the issue is well-documented across both BRZ and Toyota 86 communities. Replacement requires transmission removal.
Subaru WRX(1 issue)
- Throw-Out Bearing Chirp/Failure2015-2021
The clutch throw-out bearing (release bearing) commonly develops a chirping noise that goes away when the clutch pedal is pressed. This is a known issue on WRX models and while the noise is annoying, it doesn't always indicate imminent failure. However, it should be monitored.
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View P0751 across all makes →Frequently Asked Questions
What does P0751 mean on Subaru?▼
P0751 stands for "Shift Solenoid A Performance/Stuck Off." This code means the transmission control module commanded Shift Solenoid A (sometimes called Shift Solenoid 1) but the transmission did not respond properly, with the solenoid acting as though it is stuck 'off.' Shift solenoids are electrically operated valves that direct hydraulic fluid pressure to engage gears, so when one underperforms the transmission may shift harshly, slip, or fail to change gears at the right time. The computer sets this code when the measured gear ratio or shift behavior does not match the commanded state. It generally indicates a hydraulic or performance issue with the solenoid or the fluid circuit it controls inside the automatic transmission. On Subaru specifically, this code is documented across 2 models.
What causes P0751 on Subaru vehicles?▼
Common causes on Subaru: Stuck or failed Shift Solenoid A, Low, dirty, or degraded transmission fluid, Clogged solenoid screen or valve body passages, Sticking or worn valve body components, Wiring or connector problem at the solenoid. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0751 on a Subaru?▼
Repair costs on Subaru range from $800 to $2,000, depending on the specific model and root cause.
Which Subaru models have P0751 documented?▼
Au7o has documented P0751 on 2 Subaru models: BRZ, WRX.