Helps to stabilize the vehicle during cornering if the vehicle turns more or less than what was intended. It also assists in maintaining traction on slippery surfaces. It does so by regulating engine output and selectively applying the brakes.
Honda Civic Owners Manual. Emissions Testing
Testing of Readiness Codes
Your vehicle has readiness codes as part of the onboard self diagnostic
system.
Some States use these codes for testing to verify whether your vehicle's
emissions
components are working properly.
The codes may not be read properly if testing is performed just a ...