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?

A: I would need to have a bit more information...

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!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Car was cutting off at random, now it won't start.

Hi there. It sounds like there is a possibility of a fault with the MAP sensor system for the P0108 code, an EGR fault for the P0401, and a catalytic converter fault for the P0420 code. Your concern could be...

Q: Check Engine Light came on gave me a O2 sensor code. A week later the car broke down and won't start. It now has catalytic converter code.

It is helpful if you include the codes numbers. There are numerous O2 sensor and catalytic converter codes. There are two O2 sensors on your car. One is monitors the fuel ratio and the PCM (powertrain control module) uses it...

Q: Just had my cam belt changed, now the Check Engine Light is on and it gets very sluggish in second gear

From the description you have provided, your vehicle having a timing belt service performed, turning into a head gasket problem, now running sluggish, all appears to be questionable. The Check Engine Light coming on again leads me to believe the...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...