Q: Q: Check Engine light is on

asked by on

Was told that the Catalytic Converter needed to be replaced with 02 Rear Sensor because the Sensor can not be installed without replacing the Catalytic Converter.
My question is why can't the Rear 02 Sensor be replaced without replacing the Catalytic Converter

My car has 86600 miles.
My car has an automatic transmission.

If I remember correctly, the 2006 Jetta has their second bank O2 sensor hard wired into the front portion of the catalytic converter. This would necessitate replacing the catalytic converter if the second bank O2 sensor is faulty. However, this video shows how to replace the downstream O2 sensor in a 2005 Jetta. You might want to review this and then verify that the O2 sensor is hard wired into the top of the Cat on your 2006.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Q: Check Engine light is on

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Jerking/Vibrations

Hello, thank you for writing in. This is going to be a process of elimination. You want to start with the simplest fixes which include balancing, aligning, and properly inflating the tires. From there, or during that process of removing...

Q: What causes my vehicle to vibrate and stall out while driving?

Hi there. This sounds like there is a major vacuum hose or line that split or came off while you were driving the vehicle. Check the engine compartment for any vacuum hose or line that could have came off or...

Q: VW Passat won't start

Hi There, This could be related to many different possibilities, but is most likely a bad connection between the battery and the starter relay. The starter relay directs power from the battery to the starter solenoid which then engages the...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.