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 thinks something is wrong with the system that helps keep the car stable when driving. It's like when you try to balance on one foot and feel wobbly.
The ASC system helps maintain vehicle stability by controlling traction and preventing skidding. This code indicates a possible issue with the plausibility of the ASC intervention.
P1673 is triggered when the vehicle's ASC system detects an implausible signal or response during its operation. This could be due to a malfunctioning sensor or an error in the control module that affects the stability control system's ability to function correctly.
• ASC warning light on the dashboard
• Reduced vehicle stability
• Unusual handling characteristics
• Faulty ASC sensor
• Malfunctioning ASC control module
• Wiring issues or poor connections
ASC: Automatic Stability Control
OBD-II: On-Board Diagnostics, second generation
• Check for any additional codes that may indicate related issues.
• Inspect the ASC sensors and wiring for damage or disconnections.
• Test the ASC control module for proper functionality.
• Replace or repair faulty ASC sensors.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ASC control module if necessary.
• OBD-II scanner
• Multimeter
• ASC sensor testing tool
$150 - $500
Moderate
• BMW 3 Series
• BMW 5 Series
• BMW X5
• Regularly inspect and maintain the ASC system.
• Ensure all vehicle software is up to date.
• Check for recalls related to the ASC system.
Stability Control System Issue
• Drive cautiously if the ASC light is on.
• Have the vehicle inspected by a professional as soon as possible.
Repairs may be covered under the vehicle's powertrain or emissions warranty.
P1673 has been reported in vehicles with stability control systems, especially in older models where sensor or module wear is more common.
Moderate – While the vehicle can still be driven, it may not handle as well, especially in adverse conditions.
Driving with a malfunctioning stability control system can increase the risk of accidents, especially in poor weather conditions.
• Vehicle must be on a flat surface.
• ASC system must be active during testing.
The ASC sensors are typically located near the wheels and the control module is usually found in the engine compartment or under the dashboard.
Q: Can I drive my car with the ASC light on?
A: Yes, but it's safer to have it checked soon, as the car may not handle as well.
Q: What happens if I ignore this code?
A: Ignoring it can lead to reduced vehicle stability and increased risk of skidding or losing control.
Pro · Four-system diagnostics
A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.
Chassis and ABS faults usually need a scanner that can read brake-system data directly.
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