2010 Mini Cooper S Runs Rough, Code P0190

Alejandro Technician San Diego, California Posted   Latest   Edited  
Unsolved
Driveability
2010 Mini Cooper S 1.6L (N14B16A) 6-spd (GA6F21WA) — WMWMF7C53ATZ70101
P0190 — Fuel Rail Pressure Sensor Circuit Bank 1
Runs Rough
Misfires

Having a P0190 Fuel Rail Pressure Sensor code after I did the cylinder head gasket, how do I test the sensor or high pressure pump?

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Missing Vehicle
Dwight Owner/Technician
Oceanside, California
Dwight Default
 

Update your post with year, make and model. A Vin will help also.

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Alejandro Technician
El Cajon, California
Alejandro Default
 

My apologies just noticed that the VIN number did not paste onto the post.

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Dwight Owner/Technician
Oceanside, California
Dwight Default
 

No worries, Iv'e done it myself. Using your scanner, look at the data for the pressure sensor and there should be about 725 PSI at idle up to a maximum of 1750 PSI at full load. Verify proper supply to the high pressure pump. The in-tank fuel pump should run at a constant 45 PSI. Check the connector to the fuel rail pressure sensor. I have seen loose connections and bent pins. I'll see if I can…

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Dwight Owner/Technician
Oceanside, California
Dwight Default
 

Fuel pressure sensor readings while connected to sensor. pin 1 yellow wire, .6volts koeo and 1.7volts@ idle pin 2, white wire, ground. pin 3, orange wire, 5V reference.

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Alejandro Technician
El Cajon, California
Alejandro Default
 

Thanks so much Dwight my apologies for the late response. We were able to purchase a Fuel Pressure without having to replace the whole fuel rail through an online source. Otherwise you will have to replace the fuel rail with sensor even thought the fuel pressure sensor is removable. Compared the brand new sensor to the old one, and Pins 2 & 3 of the Fuel pressure had an open circuit. New one…

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