p0301 code

Asked by Jan 03, 2009 at 09:35 AM about the 2002 Mercedes-Benz SLK-Class

Question type: Maintenance & Repair

My 2002 slk 230 kompessor has been giving me a 301 error. so I changed the spark plugs. No help, changed the #1 coil pack. After running very well for 1 week I get the p0301 again.

2 Answers

130

Could be injector, plug wire, ignition module, wireing

680

If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back. I know this tool can do your car, http://chinasinoy.com/wholesale/mb-star-c3-pro-with-seven-cable-for-benz-truck-and-cars-fit-all-computer.html If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.

1 of 1 people found this helpful.

Your Answer

Add photo

Related Questions

Search Mercedes-Benz SLK-Class Questions

Mercedes-Benz SLK-Class Experts

#1 Richard Keeler
Richard Keeler
Reputation 340
#2 tedlew
tedlew
Reputation 240
#2 Michael Kane
Michael Kane
Reputation 240
View All

Related Models For Sale

Used Mercedes-Benz SL-Class
42 Great Deals out of 2,825 listings starting at $3,500
Used Mercedes-Benz CLK-Class
38 Great Deals out of 1,258 listings starting at $1,500
Used BMW Z4
40 Great Deals out of 1,103 listings starting at $4,995
Used Mercedes-Benz C-Class
446 Great Deals out of 26,581 listings starting at $2,000
Used Mercedes-Benz E-Class
418 Great Deals out of 19,904 listings starting at $699
Used Porsche Boxster
42 Great Deals out of 1,185 listings starting at $4,300
Used Chevrolet Corvette
120 Great Deals out of 20,753 listings starting at $3,000
Used BMW 3 Series
973 Great Deals out of 31,729 listings starting at $1,000
Used Porsche 911
93 Great Deals out of 4,510 listings starting at $9,995
Used Mercedes-Benz S-Class
171 Great Deals out of 6,479 listings starting at $2,700
Used Ford Mustang
472 Great Deals out of 45,735 listings starting at $1,999
Used Audi TT
26 Great Deals out of 942 listings starting at $2,995

Used Cars For Sale

2016 Mercedes-Benz SLK-Class For Sale
69 listings starting at $28,995
2015 Mercedes-Benz SLK-Class For Sale
134 listings starting at $27,987
2014 Mercedes-Benz SLK-Class For Sale
6 Great Deals out of 225 listings starting at $22,997
2013 Mercedes-Benz SLK-Class For Sale
3 Great Deals out of 65 listings starting at $21,500
2012 Mercedes-Benz SLK-Class For Sale
42 listings starting at $20,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.