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 found a problem with how it measures the air going into the engine. It's like if you were trying to breathe through a straw and someone pinched it, making it hard to know how much air you were getting.
The P1163 code is triggered when there is a discrepancy between the readings of the Throttle Position Sensor (TPS) and the Hot Film Air Mass Meter (MAF) on Bank 2 of the engine.
The engine control module (ECM) uses the Throttle Position Sensor and the Hot Film Air Mass Meter to monitor the amount of air entering the engine. If the readings from these two sensors do not match within the expected range, the ECM will set the P1163 code. This discrepancy can affect the air-fuel mixture, leading to performance issues.
• Check Engine Light is on
• Poor engine performance
• Rough idling
• Decreased fuel efficiency
• Faulty Throttle Position Sensor
• Defective Hot Film Air Mass Meter
• Wiring issues or poor connections
• Vacuum leaks
• ECM software or hardware malfunction
Throttle Position Sensor (TPS): A sensor that monitors the position of the throttle in an internal combustion engine.
Hot Film Air Mass Meter (MAF): A sensor used to determine the mass flow rate of air entering a fuel-injected internal combustion engine.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the Throttle Position Sensor and Hot Film Air Mass Meter for proper operation.
• Check for vacuum leaks.
• Replace the Throttle Position Sensor if faulty.
• Replace the Hot Film Air Mass Meter if defective.
• Repair or replace damaged wiring or connectors.
• Fix any vacuum leaks.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $400
Moderate
• BMW 3 Series
• Mercedes-Benz C-Class
• Audi A4
• Regular maintenance and inspection of sensors
• Ensure clean air filters
• Check for vacuum leaks periodically
Sensor Issue
• Have the vehicle inspected by a professional if the Check Engine Light is on.
• Avoid driving the vehicle if performance issues are severe.
Check with your vehicle manufacturer for specific warranty coverage on sensors.
This code has been reported in vehicles with aging sensors or after significant mileage.
Moderate – It should be addressed soon to avoid further engine performance issues.
Ignoring this code can lead to increased emissions and potential engine damage.
• Engine at operating temperature
• Vehicle in idle and driving conditions
The Throttle Position Sensor is located on the throttle body, and the Hot Film Air Mass Meter is located in the intake air duct.
Q: Can I drive with a P1163 code?
A: While you can drive short distances, it's best to have it checked soon to avoid further issues.
Q: Will a dirty air filter cause a P1163 code?
A: A dirty air filter can contribute to air flow issues, which might trigger this code.
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