Car Questions
RepairPal is your advocate for car care advice and guidance

Engine starts but stall immediately. fault codes P0171,P0725,P1857 and P1850

(1999 Volkswagen Beetle)
in Ocala, FL on March 23, 2012
have manual but these particular codes are not listed. I have replaced the fuel filter,fuel pump relay switch and two vacumm lines still have same problem even after reseting computer.
Displaying 2 answers & 0 comments
Popular Answer
of Miles Auto Services on March 23, 2012
P0171 is a lean air mixture code and P0725 is a engine speed sensor fault. I do not see the other codes in fault code list. You may be getting some bogus codes depending the scanner that gets the code for you. P codes are generic but VW uses codes like 5 digit numbers. Might try clearing codes and retry starting and see what comes back. VW has had a history of mass air sensor failures and the P0171 would relate to that.
on April 16, 2012
Your spark plugs must be set perfect. If not the vehicle will keep stalling. Check your spark plug wires also they wear out after time.
RepairPal estimates are guaranteed at over 2,000 quality certified locations nationwide. Learn more

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
High beam doesn't come on now head lights don't work at all
I replace the battery and it wont start the lights come on the horn works the lights on dash come on
Didn't find what you were looking for?