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 the information from the part that measures how much air is going into the engine.
The air mass flow sensor measures the amount of air entering the engine, and this code indicates that the signal from the sensor is not changing as expected.
The P116D code is triggered when the Engine Control Module (ECM) detects an unexpected or incorrect gradient in the signal from the air mass flow sensor. This could indicate a problem with the sensor itself or an issue in the wiring or connections.
• Check Engine Light is on
• Poor engine performance
• Decreased fuel efficiency
• Faulty air mass flow sensor
• Wiring issues or poor connections
• Contaminated or dirty sensor
ECM: Engine Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the air mass flow sensor and its wiring.
• Check for any obstructions or dirt on the sensor.
• Clean the air mass flow sensor.
• Repair or replace damaged wiring or connectors.
• Replace the air mass flow sensor if faulty.
• OBD-II scanner
• Multimeter
• Screwdriver set
$100 - $300
Moderate
• BMW 3 Series
• BMW 5 Series
• BMW X5
• Regularly clean the air intake system.
• Ensure proper maintenance of the air filter.
• Inspect electrical connections periodically.
Sensor Issue
• Have the vehicle inspected by a professional.
• Do not ignore the Check Engine Light.
• Maintain regular vehicle servicing.
Check if the vehicle's warranty covers sensor replacement.
This code is commonly associated with BMW vehicles and often relates to sensor contamination or wiring issues.
Moderate – While the vehicle may still be drivable, it is recommended to address the issue to prevent further engine performance problems.
Driving with a malfunctioning sensor can lead to increased emissions and may not comply with local environmental regulations.
• Engine at operating temperature
• Vehicle at idle and under load
The air mass flow sensor is typically located between the air filter and the intake manifold.
Q: Can I drive with a P116D code?
A: It's possible to drive, but it's best to have the issue checked to avoid further engine problems.
Q: How often should the air mass flow sensor be cleaned?
A: It should be inspected and cleaned as part of regular maintenance, typically every 30,000 to 50,000 miles.
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