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 understanding how much air is going into the engine. It's like when you can't tell how much water is in a glass because the water level is unclear.
The P116C code indicates that the air mass flow sensor is sending signals that are outside the expected range, which can affect the engine's air-fuel mixture.
The Mass Air Flow (MAF) sensor measures the amount of air entering the engine. If the sensor's signal is out of the expected range, it can cause the engine control module (ECM) to miscalculate the amount of fuel needed, leading to performance issues.
• Check Engine Light is on
• Poor fuel economy
• Rough idle or stalling
• Faulty MAF sensor
• Wiring issues or poor electrical connections
• Air leaks in the intake system
MAF Sensor: Mass Air Flow Sensor, measures the amount of air entering the engine.
ECM: Engine Control Module, the computer that manages engine performance.
• Use an OBD-II scanner to confirm the code.
• Inspect the MAF sensor for dirt or damage.
• Check the wiring and connectors for any issues.
• Clean or replace the MAF sensor.
• Repair or replace damaged wiring or connectors.
• Fix any air leaks in the intake system.
• OBD-II scanner
• Multimeter
• Screwdriver set
$100 - $400
Moderate
• Ford Focus
• Chevrolet Malibu
• Toyota Camry
• Regularly clean the MAF sensor.
• Ensure air filters are replaced as needed.
• Inspect intake system for leaks periodically.
Sensor Issue
• Avoid driving the vehicle until the issue is fixed to prevent further damage.
• Consult a professional mechanic if unsure about the repair.
Check with your vehicle's manufacturer for specific warranty coverage on sensors.
This code has been associated with faulty MAF sensors in various vehicle models, often due to contamination or wiring issues.
Moderate – Should be addressed soon to avoid potential engine performance issues.
Driving with a faulty air mass flow sensor can lead to increased emissions and potential safety hazards.
• Engine at operating temperature
• No other engine codes present
The MAF sensor is typically located between the air filter and the throttle body in the intake system.
Q: Can I drive with a P116C code?
A: It's not recommended as it can lead to poor engine performance and increased emissions.
Q: How often should the MAF sensor be cleaned?
A: It's a good practice to clean the MAF sensor every 30,000 to 50,000 miles or as needed.
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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.