Volkswagen 2.0L turbo, system lean condition, will not idle, rough idle, check engine light on. Here's a list of the possible codes that will set and their descriptions. P0300-P0304 - Cylinder misfires P0171 - Bank 1 system too lean P0507 - Idle air control sys. RPM higher than expected This vehicle sets the fuel trim system lean and idle control... Read More →
