31manifold and/or airflow meter sensor signal circuit--airflow meter/circuit--manifold pressure sensor/circuit--ecu
The country code and area code of Ane, Netherlands is 31, (0)524.
The country code and area code of Barneveld, Netherlands is 31, (0)342.
The country code and area code of Doetinchem, Netherlands is 31, (0)314.
The country code and area code of Delft, Netherlands is 31, (0)15.
The country code and area code of Harderwijk, Netherlands is 31, (0)341.
Vacuum switch signal, open or short circuit detected in vacuum switches, # 1 or # 2 vacuum switches signal, any of them or both fefective...toyota tercel 87 - 94 aut. rep. manual.
Not a complete answer, but seeWhat_is_branch_address_of_sort_code_09-01-31
Evap purge solenoid circuit open.
Country code +31 is the Netherlands; the '2' is the first digit of the city code. For example, +31 20 is Amsterdam.
The country code and area code of Grave, Netherlands is 31, (0)486.
Area code +46 31 (or area code 031 as dialed within Sweden) is Göteborg (Gothenburg).