O2 check engine light
01-09-2014, 02:59 PM
#1
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CLK W208
O2 check engine light
I just changed both of my primary O2 sensors a few days ago because i kept getting P0135 code. I decided to change both of them since the work is being done and not half butt it. i bought the O2 sensors from autohausaz.com that are for the 2002 CLK55 which is what my car is now, they arent the universal ones or anything like that. they are the exact replacements and they are bosch. how ever since the day after i changed them i keep getting P0135 and Po150 codes. I cant figure out what is going on. any help would be much appreciated.
01-10-2014, 02:08 AM
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2000 CLK 430
Hey Ash i changed mine with the same codes and my mechanic to just drive it until it turns off, i know you changed the MAF but that can also throw the codes as well, i just changed both bc my car is old
01-11-2014, 09:30 AM
#3
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The STAR diagnostic software will clear all the codes, many of the hand held OBDII scanners can too.
When I got a CEL due to a bad MAF, after it was replaced and 3 cold starts, the CEL light turned off.
Was due for a state inspection, after driving 100 miles or so, failed inspection.
Their are a dozen or so OBDII related sensors, that need to reset from 'not ready' to 'ready'. Normally, driving 100 miles resets them. Drove another couple of hundred miles and passed.
When I got a CEL due to a bad MAF, after it was replaced and 3 cold starts, the CEL light turned off.
Was due for a state inspection, after driving 100 miles or so, failed inspection.
Their are a dozen or so OBDII related sensors, that need to reset from 'not ready' to 'ready'. Normally, driving 100 miles resets them. Drove another couple of hundred miles and passed.
03-09-2015, 01:57 PM
#4
Super Member
The STAR diagnostic software will clear all the codes, many of the hand held OBDII scanners can too.
When I got a CEL due to a bad MAF, after it was replaced and 3 cold starts, the CEL light turned off.
Was due for a state inspection, after driving 100 miles or so, failed inspection.
Their are a dozen or so OBDII related sensors, that need to reset from 'not ready' to 'ready'. Normally, driving 100 miles resets them. Drove another couple of hundred miles and passed.
When I got a CEL due to a bad MAF, after it was replaced and 3 cold starts, the CEL light turned off.
Was due for a state inspection, after driving 100 miles or so, failed inspection.
Their are a dozen or so OBDII related sensors, that need to reset from 'not ready' to 'ready'. Normally, driving 100 miles resets them. Drove another couple of hundred miles and passed.
If you had done a forum search prior to changing O2 sensors, you would find that that code is almost 100% MAF problem...get an OEM from authauz...no cheap eBay from China
