SLK/R170 CEL and code P0410 - MBWorld.org Forums

Nov 3, 2008 | 11:10 AM

Shore

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Junior Member

Joined: Apr 2007

Posts: 33

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From: Port Orange Florida

98 SLK230

CEL and code P0410

Car runs like it always has.Autozone pulled this code but did not reset the light.

Secondary injection system fault.
1. circuit relay?
2.Check connector wiring?
3. AIR pump defective or hose blocked

Nov 3, 2008 | 07:54 PM

Shore

Thread Starter

Junior Member

Joined: Apr 2007

Posts: 33

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From: Port Orange Florida

98 SLK230

I pulled the battery cable and reconnected.The CEL light is gone.Let it run for about 10 minutes while I redid the clock and radio.I checked all around the airbox and S/C intake and found nothing odd.I did have a bit of trouble getting the airbox to go back together after checking the filter.I did not loosen any of the clamps.The car ran fine the whole time and no CEL.

The wife took it to work a few hours later and called me sayng the car hesistated a few times when giving it gas.Nothing big and no CEL.

I wonder if I didn't get the airbox back together right?

Nov 3, 2008 | 09:46 PM

Untertürkheim

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Joined: Mar 2007

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Keep us updated, the smog pump/air injection can be funny with FI engines, I know someone who had was chasing a similar problem that was related to the blow off valve being bad and disturbing the smog pump/air injection.

Nov 5, 2008 | 08:54 AM

Shore

Thread Starter

Junior Member

Joined: Apr 2007

Posts: 33

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From: Port Orange Florida

98 SLK230

I've been told twice on another board that the check valve is bad under the box and needs cleaning or replacing.

Nov 5, 2008 | 10:37 AM

Shore

Thread Starter

Junior Member

Joined: Apr 2007

Posts: 33

Likes: 0

From: Port Orange Florida

98 SLK230

On a sidenote, the car may be a bit loaded up.It is her SLK so she never gets on the pedal hard.She also leaves it in 2nd(Winter)gear start.It flat gets better MPG in 2nd gear starts.I have it in 1st(S) and it started clearing up after a few full throttle passes.Now it seems fine.

I'm not one to fix what is not broken so I'l leave it alone.If it throws the light again, then I'll pull that valve.

Nov 8, 2010 | 07:39 PM

BJ's SLK320

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Joined: Apr 2009

Posts: 21

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From: Fort Worth, TX

2001 SLK320

Quote:

Originally Posted by Shore

I've been told twice on another board that the check valve is bad under the box and needs cleaning or replacing.

I know this is an old thread, but I figured I'd follow the "better to post in an old thread than start a new one" rule.

I currently have the exact same situation, except mine is a 320. I recently replaced the Crankshaft position sensor, the Camshaft position sensor, and the MAF sensor (all with brand new Bosch items. no cheap ebay knockoffs). So I'm not sure what else could be causing this issue.

Background:
I bought a new Jeep in August and wanted to spend some time getting to know her, so my SLK ended up sitting for about 2 months and when I tried to start it a couple of weeks ago, the battery was dead. I used a drip charger to recharge the battery and after about 4 hours is cranked over, but was running rough. I figured it was just b/c the ECM got reset. I've put about 120 miles on it since the recharge, so that should be more than enough for the ECM to fully reset. I now have a CEL. Took it to Autozone today and got the P0410 code.

I've searched this forum, but can't find any sold answers on how to fix this problem (especially on a 320). I noticed above you talk about a check value. What/where is this on a 320? What can I use to clean it?

Right now, my most important thing is getting this code elliminated so the car can be inspected. It is already pass due. I took it on Saturday but there weren't enough miles on the ECM to complete the inspection. I have 15 days to fix this problem and hope for no other CEL issues, or I have to pay for ANOTHER inspection.

Thanks for your help.