Error Codes DTC - Assistance please - Mercedes Benz SLK Forum

SLK R170 General Discussion SLK 200, SLK 230K, SLK 320, SLK32 AMG

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#1 Old 04-04-2019
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Error Codes DTC - Assistance please

Hello,

I have a 1997 SLK 230 R170 Pre-FL.

I have searched for the error codes i have been given from a diagnostic test.

P0803 1-4 Upshift (Skip Shift) Solenoid Control Circuit Malfunction
P0805 Clutch Position Sensor Circuit Malfunction
P0806 Clutch Position Sensor Circuit Range/Performance
P1525 right camshaft control device regulation solenoid valve (Y49/2)

So, i have no idea how to/repair or diagnose these issues, i know the car is drinking fuel 80 miles cost me £30 @ £1.19pl.

The car is sluggish sometimes and only drive's in DRIVE (D) sometimes.. but if i change from 1-4 then it has no problems.

Its thrown me off completely. i have had the cam sensor sorted out a little while ago but these problems have only just recently happened.

Could anyone please point me in the correct direction?

Any help would be appreciated!!

Terry!
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#2 Old 04-04-2019
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Perhaps try something simple first, like a battery reset. Hey, you never know..
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#3 Old 04-05-2019
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Originally Posted by Roxanne7169 View Post
Perhaps try something simple first, like a battery reset. Hey, you never know..
Hi,

I've tried this many times and nothing actually changes.

Thanks
Terry
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#4 Old 04-05-2019
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Did you delete the codes? Are the codes current?
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Remote installation of Passthru, C4 DAS/Star Mercedes, XENTRY,EPC/WIS
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#5 Old 04-05-2019
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Quote:
Originally Posted by Terry.mills01 View Post
Hello,

I have a 1997 SLK 230 R170 Pre-FL.

I have searched for the error codes i have been given from a diagnostic test.

P0803 1-4 Upshift (Skip Shift) Solenoid Control Circuit Malfunction


Terry!
Found THIS if it helps?

These two:
P0805 Clutch Position Sensor Circuit Malfunction
P0806 Clutch Position Sensor Circuit Range/Performance

pertain to manual gearboxes .. odd that
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#6 Old 04-05-2019
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OP, I’m trying to research your codes in DAS simulation. It asks for a VIN. Would you mind posting that or perhaps send me a PM?
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#7 Old 04-05-2019
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Quote:
Originally Posted by Roxanne7169 View Post
OP, Iím trying to research your codes in DAS simulation. It asks for a VIN. Would you mind posting that or perhaps send me a PM?
sent,,,, chk your pm.


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#8 Old 04-05-2019
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Originally Posted by LeonardoDaBenz View Post

sent,,,, chk your pm.
TY. I wonít pretend to know what Iím doing but itís interesting to try. User info lists UK so I assume RH steering. Also based on year Iím assuming a 16 pin diagnostic port, if in fact the 32 was an upgrade (I have no idea)
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#9 Old 04-05-2019
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Quote:
Originally Posted by Roxanne7169 View Post
TY. I wonít pretend to know what Iím doing but itís interesting to try. User info lists UK so I assume RH steering. Also based on year Iím assuming a 16 pin diagnostic port, if in fact the 32 was an upgrade (I have no idea)
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Other way round Rox, 38 pin OBD1 is the round port under the bonnet (hood) that's found in the earlier pre-FL, 16 pin is the upgraded OBD2
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#10 Old 04-07-2019
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Originally Posted by i860 View Post
Did you delete the codes? Are the codes current?

Wouldnt let me clear the codes, tried a few times!

Thanks
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#11 Old 04-07-2019
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Originally Posted by M4rCu5 View Post
Found THIS if it helps?

These two:
P0805 Clutch Position Sensor Circuit Malfunction
P0806 Clutch Position Sensor Circuit Range/Performance

pertain to manual gearboxes .. odd that

This is an Auto box?
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#12 Old 04-07-2019
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Quote:
Originally Posted by Roxanne7169 View Post
OP, Iím trying to research your codes in DAS simulation. It asks for a VIN. Would you mind posting that or perhaps send me a PM?
Sent, Thanks
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#13 Old 04-07-2019
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Originally Posted by Terry.mills01 View Post
This is an Auto box?
I gathered that, that's why I said it was odd.

It's not unknown for one MB malfunction to throw up several codes and it could well the first one - P0803 1-4 Upshift (Skip Shift) Solenoid Control Circuit Malfunction - that's throwing up the second two. Still odd tho.
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#14 Old 04-07-2019
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Check the pilot bushing for fluid leakage first. If it's wet, check the TCU end too, and replace the bushing. Clean the wiring, and clean the inside of the TCU if that end of the wiring is wet.
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#15 Old 04-08-2019
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Do as efair says, check the pilot bushing for leakage.

What's the mileage on the vehicle?
Do you know if the ATF & filter has ever been changed? Service history?
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