How do I fix code p1093?

Since a blocked fuel filter is the common cause of this problem, then cleaning or replacing your fuel filter can fix the problem. Other repairs, of course, include repairing or replacing components to prevent fuel system leakage.

Where is the fuel rail pressure sensor on a Duramax?

right fuel rail
The sensor is mounted on the right fuel rail under the EGR Cooler.

What causes low fuel rail Duramax?

It could be a restriction or a leak on the supply line between the fuel tank and the injection pump. It could be a weak injection pump not able to increase fuel pressure up to the maximum under load. It also could be one or more injectors have high return rate.

How do I fix code p0089?

The most common fixes for this error code are:

Replace or repairing the damaged or restricted fuel lines.
Replace fuel pressure regulator.
Replace clogged filters or screens.
Replace failed fuel pump.

What causes low fuel rail pressure?

Typical causes for low fuel pressure include a dirty fuel filter, weak pump, incorrect tank venting, restricted fuel lines, a clogged pump inlet strainer and faulty electrical control.

What causes a P0087 code?

Error Code P0087 is triggered when the PCM (Powertrain Control Module) has detected low fuel pressure (or below the specification commanded to the fuel pump driver module or fuel pump assembly) in its fuel pressure sensor. Low fuel pressure is actually what causes the PCM to activate the Check Engine light.

How do you fix a low fuel rail pressure on a LBZ Duramax?

Inspect fuel lines from fuel filter to injection pump and from CP3 to fuel rails for any leaks or damage. Change your fuel pressure relieve valve to a Race Fuel Valve (solid valve replacement) The spring in the factory valve often wears out and can relieve pressure at a much lower pressure than it should.