P0236 on Buick
Turbocharger Boost Sensor A Circuit Range/Performance
P0236 on Buick vehicles indicates turbocharger boost sensor a circuit range/performance. Au7o has documented this code across 1 Buick model — most commonly on Encore. This code indicates a range or performance problem with turbocharger (or supercharger) boost pressure sensor 'A', the sensor that tells the engine computer how much boost the forced-induction system is producing. The computer compares the sensor's reading against expected values for the current engine load and conditions, and sets this code when the signal is implausible or doesn't track properly. It usually means the boost reading is unreliable rather than completely missing, which can cause reduced power, poor throttle response, or limp mode. The fault can lie in the sensor itself, its wiring, or in actual boost-related problems like leaks.
Common Causes of P0236
- •Faulty boost (MAP/charge) pressure sensor
- •Boost leak from a cracked or loose intercooler hose or pipe
- •Wiring or connector fault at the boost sensor
- •Clogged or kinked sensor reference hose
- •Failing turbocharger or wastegate not producing correct boost
- •Intake or vacuum leak affecting pressure readings
- •Carbon or oil contamination on the sensor element
P0236 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 P0236 across all makes →Frequently Asked Questions
What does P0236 mean on Buick?▼
P0236 stands for "Turbocharger Boost Sensor A Circuit Range/Performance." This code indicates a range or performance problem with turbocharger (or supercharger) boost pressure sensor 'A', the sensor that tells the engine computer how much boost the forced-induction system is producing. The computer compares the sensor's reading against expected values for the current engine load and conditions, and sets this code when the signal is implausible or doesn't track properly. It usually means the boost reading is unreliable rather than completely missing, which can cause reduced power, poor throttle response, or limp mode. The fault can lie in the sensor itself, its wiring, or in actual boost-related problems like leaks. On Buick specifically, this code is documented across 1 model.
What causes P0236 on Buick vehicles?▼
Common causes on Buick: Faulty boost (MAP/charge) pressure sensor, Boost leak from a cracked or loose intercooler hose or pipe, Wiring or connector fault at the boost sensor, Clogged or kinked sensor reference hose, Failing turbocharger or wastegate not producing correct boost. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0236 on a Buick?▼
Repair costs vary widely depending on the root cause and specific Buick model.
Which Buick models have P0236 documented?▼
Au7o has documented P0236 on 1 Buick model: Encore.