
Diagnostic procedure


 Dtc b2477
Dtc b2477 Dtc b2777, b2778, b2779, b2780
Dtc b2777, b2778, b2779, b2780Mazda 6 Service Manual: Engine Coolant Temperature Gauge (Without Multi-information Display)
   Displays the engine coolant temperature. The white gauge indicates that the engine 
coolant temperature is low, and the red gauge indicates that the engine coolant 
temperature is high and overheating.
CAUTION
If the engine coolant temperature gauge indicator flashes, there is a possibility 
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Mazda 6 Service Manual: Fuel Requirements
   Vehicles with catalytic converters or oxygen sensors must use ONLY UNLEADED FUEL, 
which will reduce exhaust emissions and keep spark plug fouling to a minimum.
This vehicle will perform best with fuel listed in the table.
* U.S. federal law requires that octane ratings be posted on gasoline st ...