C230 Check Engine/O2 Sensor Problem
Thread Starter
Newbie
Joined: Jul 2009
Posts: 1
Likes: 0
C 230
C230 Check Engine/O2 Sensor Problem
Hello everyone,
Got a 98 C230 with the check engine light going on for the past week.
The readings from the scanner show bad 02 Sensor, Bank 1 Sensor 1. Had it replaced immediately and about 50 miles later the check engine light came back on. Since they used a standard 02 sensor that fits most cars, my mechanic figured the Mercedes would be more particular, so we ordered a Bosch 02 sensor and had that installed. Again, check engine light was reset and 50 miles later the check engine light is on again, with the same reading; 02 Sensor bank 1 sensor 1. I've been back to my mechanic 3 times, and we're just about lost as to what the problem could be. The readings on the scanner show good numbers (for acceleration/air flow.) But every time we reset it, 50 miles later it comes on. It's definitely bank 1 sensor 1 that has been replaced... twice now. There are no gas caps off.
Would definitely appreciate any help or advice!
Thanks!
Got a 98 C230 with the check engine light going on for the past week.
The readings from the scanner show bad 02 Sensor, Bank 1 Sensor 1. Had it replaced immediately and about 50 miles later the check engine light came back on. Since they used a standard 02 sensor that fits most cars, my mechanic figured the Mercedes would be more particular, so we ordered a Bosch 02 sensor and had that installed. Again, check engine light was reset and 50 miles later the check engine light is on again, with the same reading; 02 Sensor bank 1 sensor 1. I've been back to my mechanic 3 times, and we're just about lost as to what the problem could be. The readings on the scanner show good numbers (for acceleration/air flow.) But every time we reset it, 50 miles later it comes on. It's definitely bank 1 sensor 1 that has been replaced... twice now. There are no gas caps off.
Would definitely appreciate any help or advice!
Thanks!
Newbie
Joined: Feb 2009
Posts: 4
Likes: 0
2006 c280 4matic
What specific code did your scanner display? Many things can cause an O2 sensor fault, check out http://www.engine-light-help.com/oxy...sor-codes.html
to get a better understanding of check engine, dtc, error code lights.
to get a better understanding of check engine, dtc, error code lights.
Newbie
Joined: Dec 2011
Posts: 1
Likes: 0
1997 C230
Did you ever get this fixed?
Hello,
I am a new member having the same problem with my 1997 C230. Did you ever figure out what caused your problem?
I am a new member having the same problem with my 1997 C230. Did you ever figure out what caused your problem?
Hello everyone,
Got a 98 C230 with the check engine light going on for the past week.
The readings from the scanner show bad 02 Sensor, Bank 1 Sensor 1. Had it replaced immediately and about 50 miles later the check engine light came back on. Since they used a standard 02 sensor that fits most cars, my mechanic figured the Mercedes would be more particular, so we ordered a Bosch 02 sensor and had that installed. Again, check engine light was reset and 50 miles later the check engine light is on again, with the same reading; 02 Sensor bank 1 sensor 1. I've been back to my mechanic 3 times, and we're just about lost as to what the problem could be. The readings on the scanner show good numbers (for acceleration/air flow.) But every time we reset it, 50 miles later it comes on. It's definitely bank 1 sensor 1 that has been replaced... twice now. There are no gas caps off.
Would definitely appreciate any help or advice!
Thanks!
Got a 98 C230 with the check engine light going on for the past week.
The readings from the scanner show bad 02 Sensor, Bank 1 Sensor 1. Had it replaced immediately and about 50 miles later the check engine light came back on. Since they used a standard 02 sensor that fits most cars, my mechanic figured the Mercedes would be more particular, so we ordered a Bosch 02 sensor and had that installed. Again, check engine light was reset and 50 miles later the check engine light is on again, with the same reading; 02 Sensor bank 1 sensor 1. I've been back to my mechanic 3 times, and we're just about lost as to what the problem could be. The readings on the scanner show good numbers (for acceleration/air flow.) But every time we reset it, 50 miles later it comes on. It's definitely bank 1 sensor 1 that has been replaced... twice now. There are no gas caps off.
Would definitely appreciate any help or advice!
Thanks!
Member
Joined: Mar 2011
Posts: 78
Likes: 2
From: NJ
2008 ML320 (W164) - 201K Miles
My vote on MAF could start going bad. Try cleaning your MAF Sensor using MAF Cleaner and reset the light and see if that helps for a while. If it does, I would change MAF. Make sure you buy original MAF from Bosch not from Aftermarket if you end up changing MAF. Cost of MAF is around $90 ( I would just replace insert of MAF from Amazon instead of entire MAF saves you $20).
