P0455 AUDI-TESTED WITH SMOKE DETECTOR FOUND LEAK IN LDP, LDP WAS REPLACED, THE SAME CODE CAME AGAIN AFTER 3 DAYS.

Question

AFTER I GET THE CODE 0455 I WENT TO THE MECANIC AND TESTED WITH THE SMOKE MACHINE, WAS FOUND A LEAK IN THE LEAK DETECTION PUMP - LDP. THE LDP WAS REPLACED WITH A BRAND NEW AUDI LDP, NOW AFTER 3 DAYS THE SAME CODE CAME OUT AGAIN.
ALSO WHEN I FILLED UP GAS THE CAR WILL NOT START IMMEDIATELY HAVE TO PUMP SEVERAL TIMES PRESSING THE ACCELERATOR AND THEN HE START.

Answer 1

Hi there,

You still have a leak and from the symptoms you are describing it's probably the purge control solenoid. This is allowing the fuel vapors into the intake when you filled the car with gas and caused a flooding condition. The smoke test will not find this because it's a closed system. Test the purge control solenoid.