Nissan Sentra Problem Report

Nissan Sentra Check Engine Light Due to Catalytic Converter Failure

(42 reports)

The catalytic converter closest to the cylinder head can fail causing illumination of the Check Engine Light. Prompt repair of this problem is recommended because the catalyst material can be sucked into the engine and cause internal damage.

Check engine light, loud knocking - told it was a bad cat -
Took my vehicle in for service. I had the coolant line flushed and fuel line flushed and diagnostic code check. The service engine soon light was on when I took it in and then the mechanic reset it. He told me the diagnostic code was a result of the catalytic converter going bad. Well, the light just came back on. -
Had a fuel system cleaning done which set the check engine light off. Turned out to be the front catalytic converter for precisely the reason stated. Fixed through replacement. -
Check engine light came on and my mechanic reset the codes and advised me to pump premium gas for the new few fills. Did so and the check engine light stayed off for 6 months. Now its back and he is advising me about a bad cat and that I need to replace it for $850. He reset the codes and advised me to replace it the next time the check engine light comes on. -
3rd cylinder bad. Had to have entire engine replaced. Nissan refused any help because it was out if warranty at 60,000. -
Code p 420 service engine soon -
Intermittent check engine light. Dealer and alt repair shop advised bad cat. Took to a third shop for full breakdown of exhaust system and found cat split at the welds. Mechanic quote, "Robot did not have its coffee that day". Replaced at cost of 983.00. Core sent back to Nissan or would be charged another 140.00. -
I am about to go on a 2,000 mile road trip and this is come on. I passed emissions today but gave the the Catalytic Converter error message. I am getting checked out tomorrow by the dealership and I hope I do not have to replace anything. -
Check Engine Light Code P420. Mechanic indicates to replace the catalytic converter first. Decision pending. -
Check engine light, Due to Failure of Catalytic Converter to Cylinder Head. Cause to miss fire. -
Replaced Catalytic Converter -
Could it be the mass air flow sencor again -
Nissan senta 2000 po171 bank 1leak -
Catalytic Converter failure -
I was told that the CO2 sensor is either broken or just malfunctioning, but my service engine soon light keeps coming on and off. -
Check engine light came on while driving--took to dealership and was told the catalytic converter needed replaced for around $950 -
The engine service soon light went on 3 days ago so I took my car to the dealer so they told me the catalytic must be replace. -
Car runs fine but the "service engine soon" light came on that the repair shop said the codes showed a bad CC. We hope that's all that is wrong! -
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