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 bobkat
bobkat
Reputation 240
#2 tedlew
tedlew
Reputation 240
View All

Related Models For Sale

Used Mercedes-Benz SL-Class
44 Great Deals out of 2,708 listings starting at $2,995
Used Mercedes-Benz C-Class
603 Great Deals out of 24,798 listings starting at $1,995
Used Mercedes-Benz CLK-Class
36 Great Deals out of 1,225 listings starting at $3,200
Used BMW Z4
41 Great Deals out of 1,057 listings starting at $3,950
Used Mercedes-Benz E-Class
408 Great Deals out of 19,570 listings starting at $1,200
Used Porsche Boxster
49 Great Deals out of 1,146 listings starting at $4,480
Used Chevrolet Corvette
222 Great Deals out of 22,145 listings starting at $3,750
Used BMW 3 Series
1,007 Great Deals out of 31,319 listings starting at $1,000
Used Mercedes-Benz S-Class
169 Great Deals out of 6,282 listings starting at $2,000
Used Ford Mustang
706 Great Deals out of 44,429 listings starting at $1,500
Used Audi TT
36 Great Deals out of 825 listings starting at $1,995
Used Mazda MX-5 Miata
77 Great Deals out of 3,926 listings starting at $1,800
Used Porsche 911
105 Great Deals out of 4,436 listings starting at $10,999

Used Cars For Sale

2016 Mercedes-Benz SLK-Class For Sale
40 listings starting at $31,295
2015 Mercedes-Benz SLK-Class For Sale
6 Great Deals out of 173 listings starting at $27,499
2014 Mercedes-Benz SLK-Class For Sale
8 Great Deals out of 194 listings starting at $23,951
2013 Mercedes-Benz SLK-Class For Sale
3 Great Deals out of 62 listings starting at $20,999
2012 Mercedes-Benz SLK-Class For Sale
3 Great Deals out of 48 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.