C180 Kopressor Fault Codes P0313 P0172
10-29-2018, 01:10 PM
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W203 C180 Kompressor
C180 Kopressor Fault Codes P0313 P0172
Hello,
I have a couple of fault codes showing on my 2005 C180 Kompressor automatic with 80k miles.
P0313 - Misfire with low fuel
https://www.obd-codes.com/p0313
I'm going forward with the assumption that the P0172 code is being triggered by incomplete combustion in the misfiring cylinder so the cause of this seems to just be a P0313 misfire
The only issue I have with the car is that during cold starts the revs drop really low when it's put in gear. It doesn't stall but it feels very weak and it quite jerky when manoeuvring.
I suspect this issue could be linked with the codes logged above but I'm at a loss with the problem currently.
My investigation so far has been;
- Checked the famous breather pipe under the intake (looks like a brand new part was fitted at dealer)
- Replaced the last original coil pack (the other 3 were replaced by the dealer before I owned the car so are only 2 yrs old)
- Cleaned MAF sensor (no change at all)
Since the generic codes don't tell me which cylinder is misfiring I intend to pull the plugs and see if any look fouled as a way of narrowing down which cylinder has issues. The plugs have only been in the car for 2yrs so I expect them to be in good shape.
Does anyone have any input on things I should look at? I'm unfamiliar with the M271 engine so any tips on checking the fuel delivery system would be appreciated. Does this engine have any common problems relating to the fuel pumps that I should look into?
I have a couple of fault codes showing on my 2005 C180 Kompressor automatic with 80k miles.
P0313 - Misfire with low fuel
https://www.obd-codes.com/p0313
P0172 - System Too Rich
https://www.obd-codes.com/p0172
https://www.obd-codes.com/p0172
I'm going forward with the assumption that the P0172 code is being triggered by incomplete combustion in the misfiring cylinder so the cause of this seems to just be a P0313 misfire
The only issue I have with the car is that during cold starts the revs drop really low when it's put in gear. It doesn't stall but it feels very weak and it quite jerky when manoeuvring.
I suspect this issue could be linked with the codes logged above but I'm at a loss with the problem currently.
My investigation so far has been;
- Checked the famous breather pipe under the intake (looks like a brand new part was fitted at dealer)
- Replaced the last original coil pack (the other 3 were replaced by the dealer before I owned the car so are only 2 yrs old)
- Cleaned MAF sensor (no change at all)
Since the generic codes don't tell me which cylinder is misfiring I intend to pull the plugs and see if any look fouled as a way of narrowing down which cylinder has issues. The plugs have only been in the car for 2yrs so I expect them to be in good shape.
Does anyone have any input on things I should look at? I'm unfamiliar with the M271 engine so any tips on checking the fuel delivery system would be appreciated. Does this engine have any common problems relating to the fuel pumps that I should look into?
