Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is getting a signal that there's too much air flowing into the engine on one side. It's like trying to drink from a fire hose instead of a straw.
The Mass Air Flow (MAF) sensor measures the amount of air entering the engine. This code indicates that the signal from the MAF sensor on Bank 2 is higher than expected.
The P1118 code is triggered when the Powertrain Control Module (PCM) detects an abnormally high voltage signal from the Mass Air Flow (MAF) sensor on Bank 2. This could indicate a problem with the sensor, wiring, or an actual increase in air flow.
• Check Engine Light is on
• Poor fuel economy
• Rough idle
• Engine stalling
• Lack of power
• Faulty Mass Air Flow (MAF) sensor
• Wiring issues or poor connections
• Vacuum leaks
• Blocked air filter
• PCM malfunction
PCM: Powertrain Control Module
MAF: Mass Air Flow
Bank 2: The side of the engine that does not contain cylinder 1
• Use an OBD-II scanner to verify the code.
• Inspect the MAF sensor and its wiring for damage.
• Check for vacuum leaks or blockages in the air intake system.
• Test the MAF sensor output with a multimeter.
• Replace the faulty MAF sensor.
• Repair or replace damaged wiring or connectors.
• Fix any vacuum leaks.
• Replace or clean the air filter.
• OBD-II scanner
• Multimeter
• Screwdrivers
• Wrench set
$100 - $400
Moderate
• Toyota Camry
• Ford F-150
• Honda Accord
• Regularly replace the air filter.
• Inspect the MAF sensor and wiring periodically.
• Ensure there are no vacuum leaks.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Regular maintenance can prevent this issue.
Check with your vehicle manufacturer; some emissions-related components may be covered under warranty.
The P1118 code has been known to occur in vehicles with high mileage or those that have not had regular maintenance.
Moderate – Should be addressed soon to prevent further engine performance issues.
Ignoring this issue could lead to higher emissions and potential engine damage.
• Engine running at idle
• Warm engine temperature
The MAF sensor is typically located near the air filter housing or along the intake duct.
Q: Can I drive with a P1118 code?
A: It's possible to drive for a short period, but it's not recommended as it can lead to further engine issues.
Q: How often should the MAF sensor be checked?
A: It's a good idea to check the MAF sensor during regular maintenance intervals or if you experience any symptoms.
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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.