Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car's engine has a part that helps control how much air goes in, kind of like a door. This code means that the door didn't close properly when it was supposed to, which could be a problem.
The throttle valve actuator is responsible for controlling the throttle valve's position. If it cannot reach the limp home position, it indicates a malfunction in the actuator or its control system.
The P168E code indicates that the throttle valve actuator on Bank 2 is unable to reach its designated 'limp home' position. This position is a default setting that allows the vehicle to operate safely at reduced power in the event of a system failure. The failure to reach this position can be due to mechanical or electrical issues within the actuator or its control circuit.
• Reduced engine performance
• Check Engine Light illuminated
• Vehicle may go into 'limp mode'
• Faulty throttle valve actuator
• Wiring issues or poor electrical connections
• Failed throttle position sensor
Throttle Valve Actuator: A device that controls the opening and closing of the throttle valve in an engine.
Limp Home Mode: A safety feature that allows a vehicle to operate at reduced power to reach a service location.
• Use an OBD-II scanner to confirm the code.
• Inspect the throttle valve actuator and related wiring for damage.
• Test the throttle position sensor for proper operation.
• Replace the throttle valve actuator if faulty.
• Repair or replace damaged wiring or connectors.
• Replace the throttle position sensor if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• BMW 5 Series
• Mercedes-Benz E-Class
• Audi A6
• Regularly inspect and maintain the throttle body.
• Ensure electrical connections are clean and secure.
• Perform routine vehicle diagnostics.
Engine Performance
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Avoid driving at high speeds until the issue is resolved.
Check with your vehicle manufacturer for specific warranty coverage related to engine components.
This code has been associated with throttle actuator issues in various models, often due to wear and tear or electrical failures.
Moderate – While the vehicle may still be drivable, it is important to address this issue to avoid further engine performance problems.
Driving with a malfunctioning throttle system can lead to reduced performance and potential safety hazards. Address this issue promptly.
• Engine running
• Throttle actuator control engaged
The throttle valve actuator is typically located on the intake manifold, near the throttle body.
Q: Can I drive with a P168E code?
A: It's best to avoid driving long distances or at high speeds until the issue is fixed, as it can affect engine performance.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to reduced engine performance and potentially more serious engine issues over time.
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