Good day everybody,
Yesterday my model year 2000 died at a red light. Little later I restarted the engine and the car ran fine. This morning same thing at a traffic light (engine at operatingt temp.) Took it to an independent shop an they pulled a P0173 fault code. Any ideas and help are greaty appriciated!

Reinhard, Vienna, Austria

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E 240 2000
E 320 Coupe

I think P0173 is a fuel enrich or too lean limit at idle or partial load fault code if I recall, but chances are your L5 crankshaft position sensor is on its way out. Do you have to wait awhile to restart or does it start again right away?

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1980 500SE/AMG Euro
1981 500SEL Euro
1982 380SEL
1983 300TD
1983 500SEC/AMG Euro
1984 500SEC
1984 300TD Euro
1986 190E 2.3-16
1986 190E 2.3
1987 300D
1997 C36 AMG
2003 C320T 4matic

past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350

Actually, engine restarted after cranking longer than usual, possibly 20 secs.

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E 240 2000
E 320 Coupe

Today engine died while coasting. No codes thrown. Ordered MAF-hope that will fix it! Anybody knows if those cars had OVPs???

Greetings

Reinhard

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E 240 2000
E 320 Coupe

Good day,
Replaced AMM (orig. BOSCH). Today same thing happened. Engine just died. Had to start for quite some time. Suddenly she fired up and ran normally. Any suggestions where to go from here?

Thanks,

Reinhard

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E 240 2000
E 320 Coupe

I guess you didn't read post #2. I would replace your CPS, Crankshaft Position Sensor. I don't know the year of your car, but the part looks something like this.
Do a search on the forum for this part and you will find many owners with the same symptoms.

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1993 190E 2.3
2001 SLK230
1971 LS5 (454) Corvette Convertible

Thank you Johnhef and slk230red it was CPS! Why in the world did we do all the testing with the 173 fault code.

Have a great day everybody

Reinhard

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E 240 2000
E 320 Coupe