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 isn't getting any signals from the system that helps keep the car stable, especially when driving on slippery roads.
The ASC system is designed to help maintain vehicle stability by controlling engine power and braking force. This code indicates that the system is not sending any activity signals to the engine control module.
P1674 is triggered when the Engine Control Module (ECM) does not detect any activity from the Automatic Stability Control (ASC) system. This could be due to a failure in the ASC module, wiring issues, or a problem with the sensors that feed data to the ASC.
• ASC warning light on the dashboard
• Loss of stability control function
• Possible ABS warning light
• Faulty ASC module
• Damaged or corroded wiring/connectors
• Defective wheel speed sensors
ASC: Automatic Stability Control
ECM: Engine Control Module
• Check for any other related trouble codes.
• Inspect the wiring and connectors for damage or corrosion.
• Test the ASC module for proper operation.
• Repair or replace damaged wiring/connectors.
• Replace faulty ASC module.
• Replace defective wheel speed sensors.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $800
Moderate
• BMW 3 Series
• BMW 5 Series
• BMW X5
• Regularly inspect and maintain the ASC system.
• Ensure sensors are clean and functioning.
• Check wiring for signs of wear or damage.
Stability Control System Issue
• Drive cautiously until the issue is resolved.
• Avoid slippery or unstable driving conditions.
Check with the vehicle manufacturer for warranty coverage on stability control components.
This code has been more prevalent in vehicles with older ASC systems, particularly in models from the early 2000s.
Moderate – It is important to address this issue to ensure vehicle stability and safety.
Driving with a malfunctioning stability control system can increase the risk of accidents, especially in adverse conditions.
• Vehicle on a flat surface
• ASC system activated
The ASC module is typically located near the ABS module, often in the engine bay or under the dashboard.
Q: Can I drive with a P1674 code?
A: While you can drive, it's not recommended as the stability control system is not functioning, which can be dangerous in certain conditions.
Q: Will fixing this code improve my car's performance?
A: Fixing this code will restore the stability control function, which enhances safety but not necessarily performance.
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