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 saying there's a problem with how much air is going into the engine on one side, and it's asking the car to go into a safe mode to avoid damage.
This code indicates that the Variable Valve Lift (VVL) system has detected an issue with the air mass entering the engine, which is not matching expected values.
The P1063 code is triggered when the Engine Control Module (ECM) detects a discrepancy in the air mass readings for the Variable Valve Lift system on Bank 1. This could lead to the engine entering a 'limp home' mode to prevent damage.
• Check Engine Light is on
• Reduced engine performance
• Engine may run rough
• Faulty air mass sensor
• Vacuum leaks
• Faulty Variable Valve Lift actuator
VVL: Variable Valve Lift
ECM: Engine Control Module
• Check for any vacuum leaks
• Inspect the air mass sensor for faults
• Test the VVL actuator functionality
• Replace faulty air mass sensor
• Repair any vacuum leaks
• Replace or repair VVL actuator
• OBD-II scanner
• Multimeter
• Vacuum gauge
$200 - $500
Moderate
• BMW 3 Series
• BMW 5 Series
• BMW X5
• Regular maintenance of air intake system
• Check and replace air filters as needed
• Inspect vacuum lines periodically
Engine Performance
• Do not ignore the Check Engine Light
• Have the vehicle inspected by a professional
• Avoid driving long distances until fixed
Check with your vehicle manufacturer for warranty coverage related to emissions systems.
This code has been more common in vehicles with advanced variable valve timing systems.
Moderate – It should be addressed soon to avoid potential engine damage.
Driving with an active Check Engine Light may lead to further damage and is not recommended.
• Engine running
• VVL system activated
The air mass sensor is typically located near the air intake system, and the VVL actuator is on the engine.
Q: Can I drive with a P1063 code?
A: It's not recommended as it may cause further engine damage.
Q: What does 'limp home mode' mean?
A: It's a safety feature that limits engine performance to prevent damage.
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