Lamp Fault Code (LFC) 27 indicates that the Restraints Control Module (RCM) has determined that there is a fault in the Passenger Airbag Deactivation (PAD) warning lamp circuit.
Most probable cause is a burned out lamp followed by a faulty RCM. The lamp is not listed as being serviceable by itself meaning the module would be replaced as a unit if the bulb is faulty. Perhaps someone has investigated this closer and can comment if the bulb can be replaced separately.
In any event, before working on any component of the airbag system, disconnect the battery and wait at least one minute before doing anything else. Airbags can be dangerous to the untrained person and are best left to the pro.
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