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 when checking the system that helps keep the car at a steady speed on the highway.
The P168F code is triggered when the vehicle's control module detects an issue during its self-test of the Adaptive Cruise Control system.
The control module performs periodic self-tests to ensure all systems are functioning correctly. If an anomaly is detected in the Adaptive Cruise Control (ACC) system during these tests, the P168F code is set. This could be due to a malfunction in the sensors, wiring, or the module itself.
• Adaptive Cruise Control not functioning
• Warning light on the dashboard
• Intermittent cruise control operation
• Faulty Adaptive Cruise Control sensor
• Wiring issues in the ACC system
• Control module malfunction
ACC: Adaptive Cruise Control
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the ACC sensors for damage or obstruction.
• Check the wiring and connections related to the ACC system.
• Replace or repair faulty ACC sensors.
• Fix any damaged wiring or connections.
• Reprogram or replace the control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Audi A4
• Volkswagen Passat
• BMW 3 Series
• Regularly inspect ACC sensors for dirt or damage.
• Ensure wiring connections are secure.
• Follow the manufacturer's maintenance schedule.
Sensor Issue
• Avoid using cruise control until the issue is resolved.
• Consult a professional mechanic for a thorough diagnosis.
Check with your vehicle manufacturer for warranty coverage on electronic systems.
The P168F code has been reported in vehicles with advanced cruise control systems, particularly in models with high mileage.
Moderate – The vehicle can still be driven, but the cruise control system may not function correctly.
Ignoring this issue may lead to decreased driving comfort and potential safety risks if the cruise control system fails unexpectedly.
• Vehicle must be in motion.
• Adaptive Cruise Control system activated.
The ACC sensors are typically located at the front of the vehicle, near the grille or bumper.
Q: Can I drive my car with a P168F code?
A: Yes, but the Adaptive Cruise Control system may not work properly.
Q: How do I reset the P168F code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue persists, further diagnosis is needed.
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