Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is having trouble measuring how much air is going into the engine on one side of the engine. It's like if you were trying to bake a cake but couldn't figure out how much flour you were putting in.
The P1116 code indicates a problem with the mass air flow sensor circuit on Bank 2 of the engine, which is responsible for measuring the amount of air entering the engine to ensure proper air-fuel mixture.
The Mass Air Flow (MAF) sensor measures the amount of air entering the engine. The engine control module (ECM) uses this information to calculate the proper amount of fuel to inject. A P1116 code is set when the ECM detects a range or performance issue with the MAF sensor circuit on Bank 2, meaning the sensor's signal is outside the expected range.
• Check Engine Light on
• Poor fuel economy
• Rough idling
• Faulty MAF sensor
• Dirty or clogged air filter
• Air leaks in the intake system
MAF Sensor: Mass Air Flow Sensor, a device that measures the amount of air entering the engine.
ECM: Engine Control Module, the computer that controls engine functions.
• Use an OBD-II scanner to verify the code.
• Inspect the MAF sensor and its wiring for damage.
• Check for air leaks in the intake system.
• Clean or replace the MAF sensor.
• Replace the air filter if it's dirty.
• Repair any air leaks in the intake system.
• OBD-II scanner
• Multimeter
• Screwdriver set
$100 - $300
Moderate
• Toyota Camry
• Honda Accord
• Ford F-150
• Regularly replace the air filter.
• Keep the MAF sensor clean.
• Perform regular maintenance checks.
Sensor Issue
• Address this issue promptly to avoid further engine problems.
• Consider consulting a professional mechanic if unsure about repairs.
Check with your vehicle manufacturer for warranty coverage on emission-related components.
This code has been commonly associated with MAF sensor issues in various vehicle models, often due to sensor contamination or wiring issues.
Moderate – It should be addressed soon to prevent potential engine performance issues.
Driving with a malfunctioning MAF sensor can lead to increased emissions and may not comply with local emissions regulations.
• Engine at operating temperature
• Vehicle at idle
The MAF sensor is typically located between the air filter box and the throttle body in the engine bay.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to poor engine performance and increased fuel consumption.
Q: Can I drive my car with this code?
A: While the car may still be drivable, it's best to address the issue to avoid further damage.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
View on Amazon
Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.
Fitment Required · Vehicle-fitment part
Relevant for airflow, fuel-trim, and intake-metering faults after confirming the sensor is actually at fault.
Airflow and fuel-trim codes can involve the mass air flow sensor after proper diagnosis.
Verify the sensor design and fitment for your exact vehicle.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.