Regan Brown
The N276 valve is the electronically-controlled fuel pressure regulating valve in the high-pressure fuel pump (HPFP). It is not a serviceable part and can only be replaced by purchasing a new high-pressure pump. The N276 valve can be identified by its black connector. If the N276 fails, it will often blow its fuse, and you will need to replace this fuse when you replace the HPFP or the new N276 won't work.
| Characteristics | Values |
|---|---|
| N276 valve issue symptoms | Check engine light, rough engine, misfires, surging on cold starts, loss of power, throttle response issues, EPC light, cruise control disabled |
| N276 valve issue fault codes | P2293, P119A, P2294, P2295, P129C, P2293, P1093, P0087, P310B, B310 |
| N276 valve replacement | Requires purchasing a new high-pressure fuel pump (HPFP) as the N276 valve is not a serviceable part |
| N276 valve replacement considerations | Ensure you get the most current version of the HPFP; check for damage to the cam follower and camshaft lobe; replace the cam follower if worn |
| N276 valve fuse | May need to be replaced if blown during N276 valve failure; located under the hood in position F7 for VW Passat B6 |
| N276 valve removal tools | T25 screws, pick, flathead screwdriver |
What You'll Learn
The N276 valve is part of the HPFP assembly
The N276 valve is a fuel pressure regulating valve in the High-Pressure Fuel Pump (HPFP). It is a solenoid valve and part of the HPFP assembly. The N276 valve can be found on the top of the HPFP.
If the N276 valve fails, it will often blow its fuse, and you will need to replace this fuse when replacing the HPFP, or the new N276 valve won't work. The N276 valve can be replaced without replacing the entire HPFP.
To remove the N276 valve, you will need to take off the intake boot attached to the back of the grille (2x T25 screws). The N276 valve is on the bottom when the HPFP is mounted, making access to the wiring plug tricky. You will need to use a pick to open the clip on the plug.
The hardest part of the job is getting the rubber line off the barbed fittings. You will need to use a flathead screwdriver to pry it up and off once you have moved the clips out of the way.
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The N276 valve is not serviceable and must be replaced with a new high-pressure pump
The N276 valve is an electronically-controlled regulating valve in the fuel pump. When it fails, it will often blow its fuse, and you will need to replace this fuse when you replace the high-pressure fuel pump (HPFP). The N276 valve is not serviceable and can only be replaced by purchasing an entire new high-pressure pump.
If you have faults relating to the N276 or other high-pressure fuel pump faults, you should always inspect your high-pressure fuel pump, cam follower, and camshaft lobe to ensure no further damage exists. This is the easiest way to verify whether you have an issue with this pump mechanically. If your high-pressure pump has become damaged, do not attempt to reinstall it. Failing to do this could potentially result in damaging any new parts in the system, or even major engine failure if the pump breaks apart sending metal shards through the engine.
If you are experiencing power loss under hard acceleration, you may have a faulty N276 valve. A faulty N276 valve can cause a P2293 - Fuel Pressure Regulator Valve (N276): Mechanical Malfunction code, as well as a B310 code. It can also cause a loss of power and throttle response, and the cruise control may be disabled.
To replace the N276 valve, you will need to remove the high-pressure fuel pump. This can be done by following these steps:
- Disconnect the battery.
- Take off the intake boot that is attached to the back side of the grille (2x T25 screws).
- Remove the HPFP by taking out the 3 mounting bolts.
- Detach the fuel lines and connectors.
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The N276 valve can be identified by its black connector
The N276 valve is part of the High-Pressure Fuel Pump (HPFP) system and is identified by its black connector. It is an electronically controlled regulating valve in the fuel pump. When it fails, it will often blow its fuse, and you will need to replace this fuse when replacing the HPFP, or the new N276 valve won't work.
The N276 valve is not a serviceable part and can only be replaced by purchasing an entirely new high-pressure pump. If your high-pressure pump has become damaged, do not attempt to reinstall it, as this could lead to engine failure if the pump breaks apart and sends metal shards through the engine.
To remove the N276 valve, you will need to take off the intake boot attached to the backside of the grille (2x T25 screws). The N276 valve is on the bottom when the HPFP is mounted, making access to the wiring plug tricky. You will need to use a pick to open the clip on the plug.
It is also important to note that there have been multiple revisions of the VW and Audi HPFP. When purchasing a new HPFP, ensure you get the most current version.
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The N276 valve is electronically controlled
To remove the N276 valve from the HPFP, you will need to disconnect the plug by opening the clip with a pick. This can be tricky due to its location, so it is recommended to practice on a more accessible plug first. Additionally, you may need to remove other components for better access, such as the flexible line from the low-pressure fuel rail. The N276 valve is attached to the HPFP with three mounting bolts, which need to be tightened evenly to avoid cracking.
When replacing the N276 valve, it is important to ensure that the new valve is compatible with your vehicle's make and model. The valve should have a low-ohm reading, as it is a solenoid valve and they are inductive. It is also recommended to check the cam rollers for any signs of wear and replace them if necessary.
Overall, replacing the N276 valve on a high-pressure fuel pump can be a straightforward process, but it requires careful attention to detail and some mechanical knowledge. It is important to follow the correct procedures and torque specifications to ensure a successful repair.
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The N276 valve is located at the bottom of the HPFP
To remove the N276 valve, you will need to take off the intake boot attached to the back of the grille. This can be done by removing the two T25 screws in the lower right corner. You will then need to remove the HPFP by taking off the three mounting bolts, the two connectors, and the two fuel lines. The nuts on the hard line are 14mm and should be tightened to 8Nm, while the HPFP mounting bolts are T30s and should be tightened to 11Nm.
The hardest part of the job is likely to be getting the rubber line off the barbed fittings. You may need to use a flathead screwdriver to pry it up and off once you have moved the clips out of the way.
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