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2003 Volkswagen Jetta Engine Light

Tiny
DVALENCI
  • MEMBER
  • 2003 VOLKSWAGEN JETTA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 128,000 MILES
I have a 2003 Jetta 2.0 4 cylinder with the engine light on, I hooked up my OBD II scanner and it gave me five codes. P0420 (Catalyst System Efficiency Below threshold) (Bank 1), P0351 (Ignition coil 'A' Primary/Secondary Circuit, P0352 Ignition Coil 'B' Primary/Secondary Circuit, P0353 Ignition Coil 'C' Primary/Secondary Circuit, P0354 Ignition Coil 'D' Primary/Secondary Circuit. Do I need to get a new front O2 sensor for the catalectic converter and a new Ignition coil? Further information on the P0420 code when scanned, is Fuel System 1 Closed Loop, Calculated LOAD 14.9%, Engine Coolant Temp 194 degrees, STFT Bank 1 -0.7%, LTFT Bank 1 0.07%, Engine RPM2560, Vehicle Speed 54
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Wednesday, January 28th, 2009 AT 4:48 PM

3 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Car runs no miss? If yes clear codes drive see what resets.
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Thursday, January 29th, 2009 AT 9:41 AM
Tiny
DVALENCI
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  • 3 POSTS
Hello, the car runs good, I have cleared the code several times and it comes back on with the same codes.
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Thursday, January 29th, 2009 AT 1:16 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Without have car on a scan tool to check each component hard to say what is needed. Is P0420 the first code set? No miss then coils are good so I would go with O2. But check for any leaks in exhaust and intake. The info at bottom of first post was that in snapshot mode?
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Thursday, January 29th, 2009 AT 2:14 PM

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