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ECM location or how to turn off check engine light

Help, Advice, Owners' Discussion and DIY Tutorials on S40 and V40. In this forum you'll find S40/V40-specific owners asking and answering questions on maintenance, ownership, repairs, tutorials and almost every do-it-yourself thing you can do to save money owning these Volvos.

1996 - 2004 S40
1996 - 2004 V40

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Year and Model: 2003 volvo s40 1.9lt
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ECM location or how to turn off check engine light

Post by 25patches » Sun Dec 15, 2019 1:19 pm

Got the code P0015 and ordered the parts; the cam shaft position sensor, crank shaft position sensor, V V T. While waiting for the parts, disconnected the battery-positive and negative-for 4 days. Put in the parts and the check engine light is still on. Have read that removing the ECM will turn off the check engine light but haven't been able to get a schematic of where the ECM is for the Volvo s40 2003 turbo 1.9 Lt. Does anyone have a better idea of how to reset the check engine light or turn it off so I can see if I have solved the problem with my Volvo. Any suggestions :?:
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Re: ECM location or how to turn off check engine light

Post by alschnertz » Mon Dec 16, 2019 6:04 pm

What type of scan/reset tool are you using?
I once had a stubborn CEL and ultimately had to reset the ECU with help from the scan tool (ScanGauge II) manufacturer.
All was good afterward.
'60 PV544, '68 220, '70 145S, '86 745T, '95 854T, '01 S40
'84 Prelude
'06 MPV
'13 Ford Focus SE

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