Volkswagen Jetta Junkies banner

p0420

  1. Blog
    I've got a 2001 VW Jetta 2.0 that has a recurring p0420 code. I replaced the cat converter and now 4 Months later code came back on. Any ideas of what could be causing it? I failed emissions when I took it through the first time. Replaced cat and code was still on. Took it back to mechanic and...
  2. VW Jetta / Bora MKIV 1998 Euro,1999.5 US -2005
    Jetta GLS 1.8T 2003. I have had several weeks of this code. I reset it after fixing a leaky air hose that goes to the brake servo but the code came back. I now notice that the code on the diagnostic device (Innova 3100) has a flashing "2A" which is according to the manual the secondary air...
  3. Jetta Troubleshooting
    Here's some back story that could help dissect my problem: About a week ago my daughter and I were at the do it yourself carwash, after all, gotta keep the whip lookin tip top. Everything was normal except for I sprayed the bottom of my car to get any possible left over salt from under my car...
  4. Jetta Troubleshooting
    I just threw this code on the jetta I know what it means, Ive tried fixing the o2 sensor and cat cleaner and nothing worked. Any other ideas or tricks I should try before getting a new cat? If I need one does it have to be OEM or can I do a magnaflow one?
  5. Jetta Troubleshooting
    P0420 engine light error just came on today in my 2003 Jetta GLX w/2.8 motor. I did some google search and it all came up for 1.8 T and 2.0 engine, nothing for 2.8 motor. The engine runs and drives great without any hesitation. It does use a little more gas than I'd like to, but it's cold...
  6. VW Jetta / Bora MKIV 1998 Euro,1999.5 US -2005
    Here we go into another saga of Fireblades little Nazi. Aight guys put new Set of iridium ngk plugs in the JET. But before this I was throwing a P0420 a catalyst below threshold. Then did tune up like stated 3 days later car is running horrible turns out I'm throwing a p0420 and a p0302...
Top