What sensors are on a Chevy Malibu?

Chevy Malibu uses a broad suite of sensors spanning engine management, drivetrain, safety systems, and comfort features—think mass air flow, O2 sensors, wheel speeds, tire pressures, airbags, and radar/camera sensors for driver assists.

Across model years and trims, the exact sensor mix varies, but these categories cover the core sensors GM typically installs on Malibu models to monitor performance, safety, and convenience. The sections below break down the main groups with representative examples.

Engine and powertrain sensors

These sensors monitor air intake, fuel delivery, combustion, and engine temperature to help the engine run efficiently and meet emissions standards.

Engine management and fuel sensors

• Mass Air Flow (MAF) sensor


• Manifold Absolute Pressure (MAP) sensor


• Intake Air Temperature (IAT) sensor


• Coolant Temperature (ECT) sensor


• Oxygen sensors (upstream and downstream)


• Throttle Position Sensor (TPS)


• Crankshaft Position Sensor


• Camshaft Position Sensor


• Fuel Pressure Sensor


• EVAP (evaporative system) pressure sensor


• Knock Sensor


• Transmission Fluid Temperature Sensor (for automatic transmissions, where equipped)


• Barometric pressure sensor (varies by engine/configuration)

These sensors feed the engine control module with data about air/fuel mixture, timing, and fuel delivery, enabling efficient combustion and emissions control.

Environmental and exhaust sensors

• Oxygen sensors (pre- and post-catalytic converters)


• Exhaust gas recirculation (EGR) related sensors (where present)


• EVAP/vent system sensors to monitor fuel vapor recovery

These help manage emissions, fuel economy, and purge strategies under varying operating conditions.

Drivetrain and speed-related sensors

• Vehicle Speed Sensor (VSS)


• Wheel Speed Sensors (ABS/ESC sensors, one per wheel)


• Transmission input/output speed sensors (where equipped)

Data from these sensors informs shifting, stability control, and fuel management algorithms that tie the engine to the drivetrain.

Safety and driver-assistance sensors

Modern Malibu trims offer a range of active safety and driver-assistance features that rely on multiple sensing modalities, including cameras and radar.

Active safety and driver-assistance sensors

• Front radar sensor (for adaptive cruise control and forward collision warning)


• Front camera (for FCW, lane-keeping, traffic sign recognition where available)


• Lane Departure Warning / Lane Keep Assist camera system


• Adaptive Cruise Control sensors (radar and camera data fusion)


• Side Blind Zone Alert radar sensors


• Rear parking sensors / ultrasonic sensors (front and rear, where equipped)


• Rear Cross Traffic Alert sensors (where equipped)


• Airbag crash sensors and g-sensor accelerometers


• Occupant Classification System (seat weight/occupant sensors)


• Tire Pressure Monitoring System (TPMS) sensors


• Ambient light sensor and rain sensor (for automatic headlights and wipers)


• Front pedestrian detection (where available, camera/rRadar dependent on year/trim)

Note: Availability of specific driver-assistance hardware varies by model year and trim level, with higher trims more likely to include full active-safety suites.

Interior, climate and comfort sensors

These sensors help the cabin feel comfortable and protect interior air quality, while also supporting climate-control features.

Cabin and environmental sensors

• Exterior ambient temperature sensor


• Cabin air temperature sensor


• Cabin humidity sensor


• Air quality sensor (for cabin air intake management)

These sensors feed the HVAC system and cabin comfort features, and may influence air recirculation and filtration decisions.

Notes on variability

The Malibu’s exact sensor tally and configuration change across generations, trims, and option packages. Entry-level models may skip some advanced driver-assistance components, while newer or higher-end trims may include more radar/camera sensors, additional TPMS sensors, and enhanced cabin sensors. Always check the specific year and trim for precise sensor availability.

Summary

In short, a Chevy Malibu relies on a comprehensive sensor network spanning engine and fuel management, drivetrain and transmission monitoring, safety and driver-assistance systems, and interior environmental controls. The exact lineup depends on the model year and trim, but the core categories above cover the typical sensors you’ll find across most Malibu configurations.

How much does it cost to replace a mass air flow sensor on a Chevy Malibu?

The average cost for a Chevrolet Malibu Mass Airflow Sensor Replacement is between $212 and $298. Labor costs are estimated between $48 and $71 while parts are priced between $164 and $227. This range does not include taxes and fees, and does not factor in your unique location. Related repairs may also be needed.

What is the most common problem with Chevy Malibu?

The most common problems with the Chevy Malibu include engine and transmission issues (such as power loss and rough shifting), electrical system failures (like a failed Passlock sensor and instrument panel issues), and leaks (particularly oil and water from the third brake light). Specific models have also been recalled for issues like unstable driver's seats and problematic throttle controls.
 
This video discusses common problems with Chevy Malibu models from 2016 to 2022: 1mFixITYouTube · Mar 29, 2024
Engine and transmission problems

• Engine power loss: Some models experience a sudden loss of power, which has been linked to issues with the electronic throttle control and accelerator pedal position sensors. 
• Transmission issues: Common complaints include rough shifting, slipping, leaks, and issues with the gear selector and transmission computer. 
• Engine performance: Problems like hesitation and sluggishness have been reported, sometimes caused by a faulty high-pressure fuel pump. 

Electrical and ignition problems 

• Passlock sensor failure: A failed Passlock sensor can prevent the car from starting. 
• Instrument panel/dashboard issues: Flickering or dead dashboard lights, as well as a faulty dimmer module, are reported problems. 
• General electrical issues: This can include everything from a radio that turns on and off randomly to total battery drain overnight. 
• Ignition switch failure: Some models have experienced a "no start" condition due to a failed ignition switch. 

Other common issues

• Leaks: Oil and water leaks are frequently reported. Water can seep in from a loose third brake light, while oil leaks can be caused by issues with the piston or oil pan. 
• Driver's seat instability: Certain models have been recalled because of an improper weld in the power tilt-adjustment mechanism, which can cause instability. 
• Fuel gauge inaccuracy: The fuel gauge may not read correctly, sometimes accompanied by a check engine light. 

This video explains the top 5 problems for Chevy Malibu models from 2013 to 2015: 1m1A Auto: Repair Tips & Secrets Only Mechanics KnowYouTube · Apr 16, 2024

What is the most important sensor on a car?

The oxygen sensor is critical for your car's health and performance. Monitoring the oxygen levels in the exhaust gases ensures optimal fuel control, engine performance, and reduced emissions.

How many 02 sensors does a Chevy Malibu have?

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