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2005 V50 2.4i Fuel pressure

Help, Advice, Owners' Discussion and DIY Tutorials devoted to the second generation C70, S40 and V50 Volvos -- awkwardly model year 2004 ½ onwards -- plus where to go for advice and discussion on Volvo's sporty C30 Coupe powered by Volvo's ubiquitous inline 5-cylinder power plant.
GabeE
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2005 V50 2.4i Fuel pressure

Post by GabeE » Sun Jan 05, 2020 2:34 pm

Hi guys, new to this but in serious need of some help. I can't find wiring diagrams online for my car. It was driving fine with no issues and the engine light came on P0190. I have resolved this issue (Faulty fuel pressure sensor) in the past by monitoring the data compared to mechanical fuel test ruling out the sensors bad. I left it and drove on another few days until suddenly a no start symptom, I checked and same code I need a Volvo guy to tell me whether or not the sensor can cause this, the fuel pump does not turn on and the rail has absolutely nothing in it for pressure can this be caused by the faulty sensor or should I be looking elsewhere? Thanks

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RickHaleParker
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Re: 2005 V50 2.4i Fuel pressure

Post by RickHaleParker » Mon Jan 06, 2020 9:43 am

GabeE wrote:
Sun Jan 05, 2020 2:34 pm
I can't find wiring diagrams online for my car.
It is the same one for the 2005 S40. Google "Volvo TP3978202".



P0190 means the ECM does not hear the Fuel Pressure sensor.
Possible source
  • Contact resistance, oxidation or poor contact in connectors or connections.
    Open circuit on signal cable.
    Damaged fuel pressure sensor.
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Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package.
Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000.
Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0.
Platform P2 2004 S60R, B2524T4, AW50/51 AWD, B8444S TF80 AWD, Bosch Motronic 7.0, BorgWarner K24 turbocharger. V8 conversion in progress.

GabeE
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Year and Model: 2005 v50 2.4i
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Re: 2005 V50 2.4i Fuel pressure

Post by GabeE » Mon Jan 06, 2020 6:12 pm

Thanks, still unable to access a diagram. I spent the night trying to work through some things. I have verified fuel pump fuse is good as well as the fuel pump relay in CEM. My control module is located under the seat and my car does NOT have an access panel to fuel pump which is a big pain. So essentially narrowed it down to FPCM or a faulty pump. Yes I’ve tried tapping the rank in attempt to get pump going. Any information you guys can provide to help or diagrams etc you can attach would be appreciated.

Sanel1279
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Re: 2005 V50 2.4i Fuel pressure

Post by Sanel1279 » Wed Jan 29, 2020 12:01 am

You can try to power the fuel pump directly through the PEM harness (the black box under the rear seat) and see if the fuel pump is running there should be 5 wires on that harness last two should be power snd ground to the fuel pump i believe red and black should be ground and the green and yellow should be positive if the pump runs try changing out the black box PEM

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RickHaleParker
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Re: 2005 V50 2.4i Fuel pressure

Post by RickHaleParker » Wed Jan 29, 2020 1:37 am

GabeE wrote:
Mon Jan 06, 2020 6:12 pm
Thanks, still unable to access a diagram.
TP3978202 There is a download button on the tool bar.
--------
Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package.
Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000.
Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0.
Platform P2 2004 S60R, B2524T4, AW50/51 AWD, B8444S TF80 AWD, Bosch Motronic 7.0, BorgWarner K24 turbocharger. V8 conversion in progress.

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