what does the following code mean B1 for a 2008 MDX

Here is what it includes at the dealer. B Service - Replace engine oil and oil filter - Inspect front and rear brakes - Check parking brake adjustment Inspect these items: - Tie rod ends, steering gear box, and boots - Suspension components - Driveshaft boots - Brake hoses and lines (including ABS) - All fluid levels and condition of fluids - Exhaust system - Fuel lines and connections 1 Service - Rotate Tires