Check Engine Light On Due to Failed Mass Air Flow Sensor on Mercedes-Benz SLK230

The mass air flow sensor can fail, resulting in poor fuel economy and Check Engine Light illumination.

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Average mileage: 90,933 (44,000–190,347)
7 model years affected: 1998, 1999, 2000, 2001, more2002, 2003, 2004
20 people reported this problem
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Viewing 1 - 10 of 10 problem details
Check Engine Light and Fuel Trim and sensor circuit issues.
check engine light on . replaced mass airflow sensor 2 times . still have same fault.
1998 Mercedes-Benz SLK230 88,456 mi,
I replaced the Mass Air Flow Sensor, not a hard fix, you can do it yourself, no need to pay the high dealer price.
2000 Mercedes-Benz SLK230 59,000 mi,
Running rough, engine light came on.
1998 Mercedes-Benz SLK230 81,928 mi,
Check Engine light is on due to the mass air filter.
1998 Mercedes-Benz SLK230 58,000 mi,
Replace MAF. This will be the 3rd time at 124K.
The check engine light has been a problem from airflow. I have just tolerated it
Actually was on way to get vehicle smogged and check engine light came on...therefore could not smog. Took car to shop. They ran test and found downsteam 02 sensor out of limits. replaced to the tune of approx. $616.00, $260.00 was labor, rest part. Still not sure if will pass smog. I have to drive 150 miles to reset computer info before it can be smogged. These sites may be helpful...or maybe not...
2003 Mercedes-Benz SLK230 130,000 mi,
check engine light on, wouldnt pass smog test, misfiring, replaced mass air flow sensor, part alone was 450.00
1999 Mercedes-Benz SLK230 44,000 mi,
Check engine light. dealer verified Mass Air Flow sensor failed