Fuel Rail Pressure Sensor 6.7 Cummins Location

The fuel rail pressure sensor 6.7 Cummins is located on the driver’s side of the engine, in between the fuel injector pump and the fuel rail. It is connected to a wiring harness that runs across the top of the valve cover and along both sides of the head. To access it, you will need to remove some components such as air intake or exhaust pipes, as well as other hardware such as bolts, nuts and clamps.

Once accessed, simply unplug it from its connector and then carefully pull it off from its bracket. Be sure not to damage any surrounding wires or parts during removal – this could cause further problems down the road with your vehicle’s engine management system.

The fuel rail pressure sensor on a 6.7 Cummins is located near the front of the engine, mounted to the fuel rail, just below and behind the driver’s side valve cover. This important component helps to regulate and monitor fuel pressure in order to ensure optimal performance from your diesel engine. Regularly checking and replacing this sensor can help prevent major issues with your vehicle’s fuel system down the line.

6.7 Cummins testing fuel rail pressure sensor resistance

Where is the Fuel Rail Pressure Sensor on a Cummins?

The fuel rail pressure sensor on a Cummins engine is typically located near the injector pump, along the top of the cylinder head. It is often situated right next to the fuel inlet line and will have two electrical wires attached to it. The purpose of this component is to measure and monitor the amount of pressure within the fuel rail so that it can be adjusted accordingly to ensure proper combustion performance.

This information also allows for diagnostics as any irregularities in readings can indicate potential problems with either fueling or other elements like air intake or exhaust gas recirculation systems. Failure of this part may cause issues such as rough idle, poor acceleration, hesitation during gear shifts, and even stalling due to improper operation being detected by the ECM (Engine Control Module).

Where is the Fuel Rail Pressure Sensor on a 2012 6.7 Cummins?

The fuel rail pressure sensor on a 2012 6.7 Cummins is located on the left side of the engine, near the front of the fuel injection pump. It’s purpose is to measure and regulate fuel pressure throughout the system, making sure that an adequate supply of fuel reaches all cylinders at optimal times in order to maintain smooth operation. The sensor itself consists of a metal body with a threaded fitting for connecting it to its housing, which may be made from either plastic or aluminum.

The actual sensing element is housed within this main body and will usually have two electrical terminals connected to it. To ensure proper functioning and prevent any damage resulting from excessive heat build-up, make sure your vehicle’s cooling system remains in good condition as well as ensuring regular maintenance intervals are followed closely when replacing filters or other components related to your vehicle’s fueling system.

What is the Fuel Rail Pressure on 6.7 Cummins?

The fuel rail pressure on a 6.7 Cummins diesel engine is set by the manufacturer at an optimal level of around 20,000 psi. This ensures that enough fuel is delivered to engine components such as injectors and pumps for efficient operation. It also helps reduce emissions, improve performance and increase fuel economy.

The pressure should not be adjusted unless there are specific problems with the system or if you intend to make modifications to your vehicle’s tuning parameters. If adjustments are necessary, they should only be done in accordance with instructions provided by the engine manufacturer, otherwise it could cause damage to the engine or result in poor performance.

What are the Symptoms of a Bad Diesel Fuel Rail Pressure Sensor?

A bad diesel fuel rail pressure sensor can cause a variety of issues, ranging from misfiring to poor engine performance. Common symptoms of a faulty pressure sensor include hard starting, rough idling, stalling or hesitation when accelerating, and loss of power. Additionally, the Check Engine Light may illuminate on your dashboard with one or more diagnostic trouble codes (DTCs) stored in the vehicle’s computer memory.

Other signs that you have an issue with your diesel fuel rail pressure sensor could be vibrations coming from the engine bay or black smoke coming out of the tailpipe due to too much fuel being injected into the cylinders. It’s important to have any potential issues diagnosed promptly and addressed accordingly by a professional technician as soon as possible in order to prevent any further damage or costly repairs down the line.

Fuel Rail Pressure Sensor 6.7 Cummins Location

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How to Replace Fuel Rail Pressure Sensor 6.7 Cummins

Replacing the fuel rail pressure sensor on a 6.7 Cummins engine requires some knowledge and patience, but it is achievable with the right tools. Firstly, make sure you have all necessary safety equipment before beginning the job. Then disconnect both battery cables from their terminals to prevent any accidental power surges or shocks.

After that, remove the air intake hose connected to the turbocharger and loosen up any ancillary components related to this task in order to gain access to the fuel rail pressure sensor. Finally, use a wrench or socket set depending on what type of fastener your vehicle has and replace it with a new one – making sure not to over-tighten it during installation as this could damage other components of your engine!

6.7 Cummins Fuel Rail Pressure Sensor Symptoms

A 6.7 Cummins Fuel Rail Pressure Sensor can fail and cause a variety of symptoms including engine misfires, decreased fuel efficiency, rough idle, hard starts and more. If the sensor fails completely it can lead to complete engine failure as the ECU will not be able to maintain proper fuel pressure levels leading to a lack of power or even stalling of the engine. It is important that any issues involving a faulty 6.7 Cummins Fuel Rail Pressure Sensor are addressed immediately in order to prevent further damage from occurring.

6.7 Cummins Fuel Rail Pressure Sensor Problems

The 6.7 Cummins Fuel Rail Pressure Sensor is an important component of the fuel injection system, and any issues with it can cause engine performance problems. Common symptoms of a malfunctioning 6.7 Cummins Fuel Rail Pressure Sensor include hard starting, misfiring, poor idle quality, and reduced power output. If you suspect your sensor may be faulty, it’s best to have it checked out by a qualified mechanic as soon as possible in order to prevent further damage down the line.


In conclusion, the fuel pressure sensor on a 6.7 Cummins engine is located at the back of the cylinder head near the fuel rail. This component is important to monitor and maintain as it plays an integral role in regulating fuel supply to ensure optimal performance of your vehicle. It’s therefore essential to know where this component is located should you need to inspect or replace it in order keep your car running smoothly and safely.


  • Zayn

    Zohn Zayn Smith is a seasoned automotive enthusiast with over 15 years of experience in the industry. As the Founder and Chief Editor of Truckguider, he specializes in Dodge Ram models, including the Ram 1500 and Ram 2500. His deep understanding of these trucks makes him a trusted authority on everything from performance and maintenance to towing capabilities.

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