P0012 Volkswagen -

Question

The car is throwing two codes p0420 and p0012. It seems to run fine although it does stall occasionally. When the code is cleared it takes 20 miles to come back on. Any trouble shooting advise?

Answer 1

Hi there,

The code P0420 points towards an issue with the catalytic converter on bank 1. Here is some info regarding this code.

P0420 VOLKSWAGEN - Catalyst System Efficiency Below Threshold Bank 1

Read more: https://www.autocodes.com/p0420_volkswagen.html

The code P0012 points towards an issue with the camshaft. Here is some info regarding this code.

P0012 VOLKSWAGEN - 'A' Camshaft Position Timing Over Retarded Bank 1

Read more: https://www.autocodes.com/p0012_volkswagen.html