Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car has a part called the throttle valve that helps control the engine's power. This code means that the backup mode for this part isn't working right on one side of the engine.
The throttle valve actuator controls the amount of air entering the engine. This code indicates that the actuator on Bank 2 failed to reach the limp home position during a start test.
The throttle valve actuator is responsible for regulating airflow to the engine. Bank 2 refers to the side of the engine opposite to Bank 1 in a V-type engine. The limp home position is a default setting that allows the car to be driven to a repair facility in case of a failure. This code is set when the actuator fails to reach this position during a diagnostic test.
• Reduced engine performance
• Check Engine Light illuminated
• Vehicle may enter limp mode
• Faulty throttle valve actuator
• Wiring issues in the throttle actuator circuit
• ECU (Engine Control Unit) software issues
Throttle Valve: A component that controls the amount of air entering the engine.
Actuator: A device that moves or controls a mechanism or system.
• Scan the vehicle for additional codes
• Inspect the throttle valve actuator and wiring
• Perform a throttle actuator test using a diagnostic tool
• Replace the throttle valve actuator
• Repair or replace damaged wiring
• Update ECU software if necessary
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• BMW 5 Series
• Mercedes-Benz E-Class
• Audi A6
• Regularly maintain the throttle body
• Ensure clean electrical connections
• Update vehicle software as recommended
Engine Performance
• Avoid driving the vehicle if it enters limp mode
• Schedule a diagnostic check with a professional
• Keep up with regular maintenance
Check with the manufacturer for warranty coverage on throttle system components.
This code has been associated with throttle actuator issues in vehicles with electronic throttle control systems.
Moderate – Address the issue promptly to avoid reduced performance or vehicle stalling.
Driving with a malfunctioning throttle actuator can lead to reduced vehicle control and safety hazards.
• Engine at operating temperature
• Vehicle at idle
The throttle valve actuator is located on the intake manifold, typically near the throttle body.
Q: Can I drive with a P16AD code?
A: It's not recommended to drive for long distances with this code, as it may lead to reduced performance or stalling.
Q: How do I reset the throttle actuator?
A: Resetting the throttle actuator usually requires a diagnostic tool to clear the code and perform a relearn procedure.
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