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2000 Mercedes Benz C230

Tiny
DRITON
  • MEMBER
  • 2000 MERCEDES BENZ C230
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 122,000 MILES
Hi, I recently received a “check engine” light, and did a computer scan and came up with a P0170 code, and it says Fuel Trim Malfunction (Bank 1). What does it mean, and how do I correct the problem. The car does not shift right in the lower gears sometimes and has lost performance. Thank you guys.
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Monday, November 17th, 2008 AT 10:03 AM

5 Replies

Tiny
RACEFAN966
  • MECHANIC
  • 5,029 POSTS
Ok this could be a few things it could be an intake vacuum leak or an injector problem or fuel pressure regulator. What you should do is get a spray bottle with water and check the intake for any leaks first. Spray around the intake and upper plenum and throttle body and if the engine idle changes or tries to die then there is were the leak is. Start with this and let me know what you find and we will go from there. Ok.
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Monday, November 17th, 2008 AT 11:38 AM
Tiny
DRITON
  • MEMBER
  • 3 POSTS
I think I found the problem, it looks like it is the mass air flow hose, and the throttle body hose, but I have no idea where to get them, I have been looking online and no luck. It is a Mercedes-Benz 2000 C230 Kompressor thanks again for the early response
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Monday, November 17th, 2008 AT 5:26 PM
Tiny
JNOVACK
  • MECHANIC
  • 723 POSTS
If those are ridged hoses then I believe those are dealer parts at this time they're not aftermarket as of yet
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Monday, November 17th, 2008 AT 7:22 PM
Tiny
DRITON
  • MEMBER
  • 3 POSTS
Hi,

I have a quick question, How do I install a new Mass Air Flow Sensor, and the hoses that connect from it to the throttle body. Like do I need to use some type of silicone or should I just tighten the hose clamps and thats it. Thank you
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Tuesday, November 18th, 2008 AT 10:20 AM
Tiny
JNOVACK
  • MECHANIC
  • 723 POSTS
This is what the map sensor looks like it should be located on the intake manifold


https://www.2carpros.com/forum/automotive_pictures/52960_wl2su6055003_1.jpg



as for the hoses if there are clamps on each end of hose just remove and install same clamps when you put the hoses on if no clamps then you just push on and tats it
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Tuesday, November 18th, 2008 AT 4:03 PM

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