P0796 on Buick
Pressure Control Solenoid 'C' Performance or Stuck Off
P0796 on Buick vehicles indicates pressure control solenoid 'c' performance or stuck off. Au7o has documented this code across 1 Buick model — most commonly on Enclave. This generic transmission code means the TCM/PCM detected that pressure control solenoid 'C' is not regulating hydraulic pressure as expected, or appears stuck in the off position. These solenoids control the line pressure that applies the transmission's clutch packs to achieve the correct gear ratios, so a performance fault here disrupts shift quality. Symptoms can include harsh or delayed shifts, slipping, or limp mode, and continued driving can accelerate transmission wear. Typical repair costs on Buick range from $2,500 to $4,500, depending on the specific model and root cause.
Common Causes of P0796
- •Faulty pressure control solenoid C
- •Low, dirty, or degraded transmission fluid
- •Blocked or restricted valve body fluid passages
- •Damaged wiring or connector to the solenoid
- •Worn valve body or stuck valve
- •Internal transmission mechanical wear
- •Faulty TCM/PCM (rare)
P0796 on Buick by Model
Buick Enclave(1 issue)
- 6T70/6T75 Transmission Wave Plate Failure2008-2012
First-generation Enclaves (2008-2017) use the 6T70/6T75 6-speed automatic, whose stamped-steel 35R wave plate can crack at the teeth after enough shift cycles. When it fractures, the transmission abruptly loses 3rd, 5th, and reverse gears, and debris can damage the valve body, drums, and torque converter. Failure typically occurs in higher-mileage 2008-2012 builds.
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What does P0796 mean on Buick?▼
P0796 stands for "Pressure Control Solenoid 'C' Performance or Stuck Off." This generic transmission code means the TCM/PCM detected that pressure control solenoid 'C' is not regulating hydraulic pressure as expected, or appears stuck in the off position. These solenoids control the line pressure that applies the transmission's clutch packs to achieve the correct gear ratios, so a performance fault here disrupts shift quality. Symptoms can include harsh or delayed shifts, slipping, or limp mode, and continued driving can accelerate transmission wear. On Buick specifically, this code is documented across 1 model.
What causes P0796 on Buick vehicles?▼
Common causes on Buick: Faulty pressure control solenoid C, Low, dirty, or degraded transmission fluid, Blocked or restricted valve body fluid passages, Damaged wiring or connector to the solenoid, Worn valve body or stuck valve. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0796 on a Buick?▼
Repair costs on Buick range from $2,500 to $4,500, depending on the specific model and root cause.
Which Buick models have P0796 documented?▼
Au7o has documented P0796 on 1 Buick model: Enclave.