P0106 on Chevrolet
MAP/Barometric Pressure Circuit Range/Performance
P0106 on Chevrolet vehicles indicates map/barometric pressure circuit range/performance. Au7o has documented this code across 4 Chevrolet models — most commonly on Corvette, Cruze, Express. 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 Chevrolet range from $100 to $7,500, 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 Chevrolet by Model
Chevrolet Corvette(1 issue)
- LT2 Broken Valve Spring Failure on Engines Built June-September 20202020-2021
A defective supplier batch of valve springs went into GM V8 engines built between June 1 and September 15, 2020, including the 6.2L LT2 in the C8 Stingray. Springs broke at astonishingly low mileage — documented C8 failures at 57 miles and at 115 miles, one of which required a flatbed tow. A broken spring drops valve control on that cylinder, producing a misfire, an audible tapping or clattering engine noise, a check engine light, and in the worst case valve-to-piston contact that destroys the head or the engine. GM acknowledged the defect in service bulletin PIP5752A on September 22, 2020, covering seven V8 families (L87, LT1, LT2, LT4, L82, L84, L8T). Owners subsequently reported failures on engines built past the September 15 cutoff, and GM extended the affected build window, so the published date range should be treated as a floor rather than a boundary. This is a discrete supplier defect and is unrelated to the LT2's lifter-tick and DFM behavior.
Chevrolet Cruze(2 issues)
- Intake Manifold Runner Control Failure (1.4T)2011-2016
The intake manifold on the 1.4T Cruze has variable-length intake runners controlled by an internal flap actuator. The actuator motor fails or the runner flaps stick due to carbon buildup and oil contamination (especially when the PCV valve cover has also failed). When the runners stick open or closed, the engine loses low-end torque, idles rough, and throws a check engine light. The plastic runner flap pivots can also break, sending debris into the intake port and potentially the cylinder.
- PCV Valve Cover Failure and Oil Leak (1.4T)2011-2016
The 1.4T engine in the first-generation Cruze has the PCV system integrated into the valve cover assembly. The PCV diaphragm ruptures, the check valve fails, or the valve cover gasket deteriorates, causing oil leaks, vacuum leaks, rough idle, and check engine lights. The failed PCV system creates excess crankcase pressure that pushes oil past seals and into the intake manifold. This is the same fundamental design flaw as the Equinox and Malibu 1.5T PCV system. GM released an updated valve cover with improved PCV components.
Chevrolet Express(1 issue)
- 6.0L L96 Broken Rocker Arm Causing Misfire and Dropped Valve2010-2024
Vans built with the 6.0L L96/LC8 Vortec V8 (the volume engine in Express 2500/3500 from 2010 on) can break a rocker arm, producing an engine tick and a hard misfire on one cylinder. GM addressed it in preliminary information bulletin PIP5522B, which specifically lists 2017-2018 Chevrolet Express among the affected vehicles and warns that a broken rocker arm can let the valve drop into the cylinder and cause catastrophic engine failure. Important generation/engine discipline: the Express 4.8L L20 and 6.0L L96 do NOT use Active Fuel Management, so the AFM collapsing-lifter story that plagues Silverado/Tahoe 5.3L and 6.2L engines does not apply to these vans - this is a rocker/valvetrain hardware failure, not an AFM lifter failure. Owners typically hear a distinct top-end tick that does not go away as the engine warms, followed by a stored misfire code. A separate, narrower valve-spring concern (GM PIP5752A) applies only to engines built roughly June 1 through September 15, 2020, and also touched Express production.
Chevrolet Sonic(1 issue)
- 1.4L Turbo PCV Valve Cover Diaphragm Failure2012-2020
The 1.4L turbocharged Ecotec engine in the Sonic shares the notorious PCV system failure with the Chevrolet Cruze. The PCV regulator diaphragm integrated into the valve cover ruptures, causing massive vacuum leaks. Additionally, the intake manifold check valve (small red/orange valve) fails, compounding the issue. This affects virtually all 1.4T Sonics eventually, typically between 50,000-100,000 miles.
Looking for P0106 on a different make?
View P0106 across all makes →Frequently Asked Questions
What does P0106 mean on Chevrolet?▼
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 Chevrolet specifically, this code is documented across 4 models.
What causes P0106 on Chevrolet vehicles?▼
Common causes on Chevrolet: 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 Chevrolet?▼
Repair costs on Chevrolet range from $100 to $7,500, depending on the specific model and root cause.
Which Chevrolet models have P0106 documented?▼
Au7o has documented P0106 on 4 Chevrolet models: Corvette, Cruze, Express, Sonic.