P0106 on Buick
MAP/Barometric Pressure Circuit Range/Performance
P0106 on Buick vehicles indicates map/barometric pressure circuit range/performance. Au7o has documented this code across 1 Buick model — most commonly on Encore. P0106 means the manifold absolute pressure (MAP) or barometric pressure sensor signal is out of the expected range or not matching engine operating conditions (range/performance). The MAP sensor measures intake manifold pressure/vacuum, which the computer uses to gauge engine load and calculate the correct fuel and ignition timing. When the reading is implausible — too steady, not tracking throttle changes, or inconsistent with other sensors — the computer flags this code. Symptoms often include rough idle, hesitation, poor fuel economy, or a lack of power, and the cause may be the sensor, a vacuum leak, or wiring. Typical repair costs on Buick range from $150 to $600, depending on the specific model and root cause.
Common Causes of P0106
- •Faulty MAP sensor
- •Vacuum leak or disconnected/cracked vacuum line to the sensor
- •Clogged or restricted MAP sensor port
- •Wiring or connector problems in the sensor circuit
- •Intake manifold leak affecting pressure readings
- •Restricted air intake or exhaust affecting manifold pressure
- •Poor ground or reference voltage to the sensor
P0106 on Buick by Model
Buick Encore(1 issue)
- PCV / Camshaft Cover Diaphragm Failure (1.4L Turbo) - "Tea Kettle" Whistle2013-2021
The 1.4L turbocharged engine (LUV/LUJ family) used in the first-generation Encore is prone to a ruptured PCV pressure-regulator diaphragm built into the plastic camshaft (valve) cover. When the diaphragm cracks, unmetered air enters the intake, producing a loud high-pitched whistle or squeal that owners describe as a boiling tea kettle under the hood, along with rough idle and stalling at stops. GM acknowledged the defect with Special Coverage N202299080, extending warranty on the PCV/camshaft cover to 10 years / 120,000 miles for certain 2014 Encore (and related Cruze/Sonic/Trax) vehicles.
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View P0106 across all makes →Frequently Asked Questions
What does P0106 mean on Buick?▼
P0106 stands for "MAP/Barometric Pressure Circuit Range/Performance." P0106 means the manifold absolute pressure (MAP) or barometric pressure sensor signal is out of the expected range or not matching engine operating conditions (range/performance). The MAP sensor measures intake manifold pressure/vacuum, which the computer uses to gauge engine load and calculate the correct fuel and ignition timing. When the reading is implausible — too steady, not tracking throttle changes, or inconsistent with other sensors — the computer flags this code. Symptoms often include rough idle, hesitation, poor fuel economy, or a lack of power, and the cause may be the sensor, a vacuum leak, or wiring. On Buick specifically, this code is documented across 1 model.
What causes P0106 on Buick vehicles?▼
Common causes on Buick: Faulty MAP sensor, Vacuum leak or disconnected/cracked vacuum line to the sensor, Clogged or restricted MAP sensor port, Wiring or connector problems in the sensor circuit, Intake manifold leak affecting pressure readings. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0106 on a Buick?▼
Repair costs on Buick range from $150 to $600, depending on the specific model and root cause.
Which Buick models have P0106 documented?▼
Au7o has documented P0106 on 1 Buick model: Encore.