Tech Tips (Tiguan Fuel Pump Relay Fault Code 01259):
Fault code 01259 stored in AW 09 vehicle electronics (J519), indicates the J519 is coded incorrectly.
There is no wiring that connects the J538 fuel pump module to the J519 vehicle electronics module. This fault is a result of improper coding of J519 (it is most likely coded as a Diesel, not a 2.0T Gas engine). Perform online coding to correct.
