For further details, please refer to Tim's thread in the Insurance Section. http://www.vectra-c.com/forum/showthread.php?t=73959 The fuel rail pressure sensor is located on the engine. Once you remove the engine cover, you can see the fuel rail. The fuel rail pressure sensor is mounted on the fuel rail. Follow manufacturer’s recommendations for testing the electronic fuel pressure regulator and the individual fuel pressure regulator control circuits with the DVOM. Disconnect controllers from the circuit before testing with the DVOM to prevent damage to control modules. Martin Lewis: What the Autumn Statement means for you – including wages, benefits, pensions, ISAs, housing, national insurance and more The fuel pressure regulator and fuel pressure sensor may be separate components but are most often integrated into a single housing which has one electrical connector.

Make sure the engine is filled to the appropriate level with the appropriate engine oil. After the codes are cleared, try driving the vehicle to see if the code reappears. If the code does not reappear immediately, you may have an intermittent condition. If there is voltage and ground at the fuel pressure control regulator, obtain fuel pressure specifications from your vehicle information source and test fuel system pressure using the fuel pressure gauge. Carefully follow manufacturer’s recommendations for connecting the fuel pressure gauge. Observe fuel system data using the scanner while visually monitoring manual fuel pressure with the fuel gauge. If fuel pressure reflected on the scanner data display does not coincide with actual fuel pressure, suspect a faulty fuel pressure sensor. This trouble code tells us that there is an issue with the circuit and not that there is a problem with the fuel pressure.Here are some repairs commonly associated with the P0190 code. The prices include labor and part costs, but do not include diagnosis costs. Fluctuations in actual fuel pressure should occur with variations in fuel pressure regulator control voltage. If this is not the case, suspect that the fuel pressure regulator is defective, there is an open or shorted circuit in one of the fuel pressure regulator control circuits, or that the PCM is bad. Engine performance will cut as you as describe, because when the EML is coming on , its going to into LHM ...so its either that as the cause of the drastic power loss or the fault itself , most likely the former because you say it clears on a restart - so thats "normal" as it were for LHM ( safe mode) Please phone them on 0800 917 2274 or 01424 200477 and quote the club name and/or reference number (906 - VECTRA-C) The diagnosis process of the P0190 code is pretty straightforward. You may need some special tools to procedure this diagnosis.

I normally start with a visual inspection of system wiring and connectors; focusing my attention on harnesses and connectors on top of the engine. The warmth associated with this area makes it popular with pests in cold climates. These pests can damage (gnaw) system wiring and connectors. The Chancellor Jeremy Hunt has today (Wednesday 22 November) announced a range of tax, benefits and savings measures. We round up the key announcements and what they mean for you.The P0190 can damage your engine in the long run, and it should be repaired as fast as possible. What repairs can fix the P0190 code? Fuel rail and related components may be under high pressure. Use caution when removing the fuel pressure sensor or fuel pressure regulator A stored code P0090 means that the powertrain control module (PCM) has detected an open control circuit in the electronic fuel pressure regulator (designated 1). This designation is used in systems that incorporate multiple electronic fuel pressure regulators. This type of designation may refer to the engine bank but not exclusively. Also, the word open could be substituted for disconnected or broken.