W203 C230K Sport Coupe mod.03 OBD Code: P0137
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Joined: Dec 2008
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W203 C230K Sport Coupe mod.03 OBD Code: P0137
Hi,
W203 C230K Sport Coupe mod.03 has about 20000 mils in best conditions.
Sparkplugs,Air and fuel filters are new
At first I changed the after cat O2 sensor (OEM).After the test drive(10-15 mils) having the same code P0137 /check engine light.
I changed also to cam sensors (with oil leak) and also installed the cable upgrade recomended from the MB Factory! Many times cleaned the connectors(with contact cleaner) from ECU,cam sensors,Os sensors before/after cat.
Still having the same problem.
Could you help me with any idea or tip?
Thx in advance
makan
W203 C230K Sport Coupe mod.03 has about 20000 mils in best conditions.
Sparkplugs,Air and fuel filters are new
At first I changed the after cat O2 sensor (OEM).After the test drive(10-15 mils) having the same code P0137 /check engine light.
I changed also to cam sensors (with oil leak) and also installed the cable upgrade recomended from the MB Factory! Many times cleaned the connectors(with contact cleaner) from ECU,cam sensors,Os sensors before/after cat.
Still having the same problem.
Could you help me with any idea or tip?
Thx in advance
makan
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
P0137 = O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)
Did your car have leaking cam sensors? Did oil get into the engine wiring harness?
Did your car have leaking cam sensors? Did oil get into the engine wiring harness?
Member
Joined: Feb 2005
Posts: 212
Likes: 2
From: Maryland USA
2003 C230 Coupe
Glyn asked you about leaking cam sensors because the oil used to leak through the wiring harness all the way down to the bottom where it connects to an engine control module. If the oil got that far down then you could have some fooling of connections, etc. There is a new harness set of wires that prevents oil leak from the cam sensor to migrate through the harness. Most cars were covered by a recall to update the cam sensor wires.
Please let us know if you got the problem resolved in any way
Thanks
Please let us know if you got the problem resolved in any way
Thanks
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