Skip the auto shop - Our mechanics make house calls

Q: I replaced my 2 lambdas but engine light is still coming on what is wrong?

asked by on

I changed my 2 lambdas but my engine light is still coming on. I was told that it might b pin holes in the cat making the lambdas read faulty is this a possibility. Or am I wasting more money and time if I change the cat?

I would need to have a bit more information about the make, model, mileage, engine/transmission combination to give you more precise advice. You’ll need to have the problem codes associated with the Check Engine Light checked in order to have a better idea of what is going on. Also consider if there has been any work that has been done besides the lambda replacements and any symptoms that changed after. If you need to get have an expert assessment of this done, a qualified professional from YourMechanic can come to your car’s location in order to diagnose the engine codes and resolve this problem.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  • Home
  • Questions
  • I replaced my 2 lambdas but engine light is still coming on what is wrong?

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: Cant get my car out of limp mode or "fail safe mode"

The reason "limp mode" has become "unbypassable" is due to the existing codes. The ECT failure, if it exists, may alone account for that because an engine coolant temperature sensor is essentially a master sensor - the value of which...

Q: Catalytic converter bad.

Catalytic converters do have a federal required warranty that most people are unaware of, talk to your dealer to find out if you are still covered. Early catalytic converter failure can be cause by other factors including coolant contamination can...

Q: BMW 35I check engine light on after using siphon

I wouldn't use a siphon again. I've got a video about it and then I said don't use it, because I've seen it cause problems. What you want to do is wait when you are almost out of gas, fill...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.