P2227 on Buick
Barometric Pressure Sensor "A" Circuit Range/Performance
P2227 on Buick vehicles indicates barometric pressure sensor "a" circuit range/performance. Au7o has documented this code across 1 Buick model — most commonly on Encore. Generic code. The barometric pressure sensor 'A' is connected but its reading is out of range or doesn't track expected atmospheric pressure — the value is absent, inconsistent, or implausible versus other pressure sensors and known altitude.
Common Causes of P2227
- •Drifting/aging BARO or MAP sensor
- •Vacuum or pressure reference problem
- •High-resistance wiring/connector
- •Sensor contamination
- •Intermittent reference voltage
P2227 on Buick by Model
Buick Encore(1 issue)
- Charge-Air Cooler Icing Can Cause Cold-Weather Power Loss (17-NA-221)2016-2018
GM Bulletin 17-NA-221 covers specified 2016-2018 Encore vehicles with the LE2 engine, through the September 18, 2017 build breakpoint. At 0°F (-18°C) or below, ice can accumulate in the charge-air cooler and restrict airflow, causing power loss, hesitation, stalling, tailpipe smoke, an oil odor or MIL during the first 10-15 minutes of operation.
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View P2227 across all makes →Frequently Asked Questions
What does P2227 mean on Buick?▼
P2227 stands for "Barometric Pressure Sensor "A" Circuit Range/Performance." Generic code. The barometric pressure sensor 'A' is connected but its reading is out of range or doesn't track expected atmospheric pressure — the value is absent, inconsistent, or implausible versus other pressure sensors and known altitude. On Buick specifically, this code is documented across 1 model.
What causes P2227 on Buick vehicles?▼
Common causes on Buick: Drifting/aging BARO or MAP sensor, Vacuum or pressure reference problem, High-resistance wiring/connector, Sensor contamination, Intermittent reference voltage. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P2227 on a Buick?▼
Repair costs vary widely depending on the root cause and specific Buick model.
Which Buick models have P2227 documented?▼
Au7o has documented P2227 on 1 Buick model: Encore.