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CODE P0685 HONDA - Odyssey Honda Cars & Trucks

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dttech
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SOURCE: trouble code p0685 vehicle wont

I cannot give you any specific help because you did not bother to mention YEAR, MAKE, MODEL, or ENGINE SIZE of the vehicle you are trying to get information on.

The "generic" description of Diagnostic Trouble Code (DTC) P0685 is: "ECM power control circuit malfunction."
Yup! this would DEFINATELY keep your engine from starting! It means that the ECM has no power to operate the engine management system. So, now you know the WHAT part of the equation. You must now diagnose, using the correct information for your particular vehicle, to find out the WHY.

Posted on Aug 06, 2011

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Wont start2004 dodge grand caravan sxt code p0685 show on dash


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P0685 fault code uk ford


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Fault code p0685


engine control EC relay open circuit

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I got code p0685. i dont know what it means exactly


This is an internal PCM failure code . The only test is to clear the code and if it resets to replace the PCM. this is covered by warranty for 8 years or 80,000 miles . So if you are under this its a free repair under warranty.

P0685 error - ECM/PCM Power Relay Control Circuit open

Hope helps.

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Trouble code p0685 vehicle wont start dont know what p0685 is please help


I cannot give you any specific help because you did not bother to mention YEAR, MAKE, MODEL, or ENGINE SIZE of the vehicle you are trying to get information on.

The "generic" description of Diagnostic Trouble Code (DTC) P0685 is: "ECM power control circuit malfunction."
Yup! this would DEFINATELY keep your engine from starting! It means that the ECM has no power to operate the engine management system. So, now you know the WHAT part of the equation. You must now diagnose, using the correct information for your particular vehicle, to find out the WHY.

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F/C P0685 Replacede the ASD relay and need to know if the computer needs to be reset?


You can reset it by disconnecting the battery for a couple minutes and reconnecting it. This will turn off the engine light and reset the adaptive memory.

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