How do I fix code P1093?
Common fixes for p1093 engine code in Duramax
- Priming the fuel system.
- Replacing fuel injector nozzle or nozzles.
- Using diesel adaptive to clear injector stiction.
- Draining fuel water separator.
- Replacing diesel within a tank.
- Checking engine computer injector timing and spray patterns.
What causes a P1093?
P1093 – Fuel Rail Pressure Low During Power Enrichment. This could be caused by a plugged fuel filter. Also, if you have big mods and the engine needs more fuel than can be delivered by the stock fuel system.
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.
What causes P0087 Duramax?
The codes pop up on a Duramax when there’s low fuel rail pressure: P0087 or P1093. Usually, the truck is performing at its maximum and unable to keep up with what’s commanded. The common rail fuel system operates at 28 – 29,000 psi and needs to drop only 2,200 psi to trigger the trouble code.
How do you test a CP3 pump?
You can simiulate max output for the CP3 by unplugging the FPR and fuel sensor. This forces the CP3 to put max output on the fuel rail. To do the check you will have to pull you glow plugs and watch excessive fuel from coming out the glow plug holes.
What is the P1093 code for the Duramax engine?
The p1093 code for the Duramax engine is typically found between the year 1999-2007 classic Chevy 2500 with a Duramax motor. As you can see there are many different causes and symptoms for this error code.
What does fuel rail pressure too low P1093 mean?
Error Code P1093 is defined as Fuel Rail Pressure Too Low. This error code is a manufacturer-specific trouble code, meaning it does not apply to all vehicles makes. Rather, it applies only to specific vehicle makes, such as Isuzu, Chevrolet, BMW, Volkswagen/Audi, and Subaru.
Is your Duramax fuel rail pressure low?
Duramax Fuel Rail Pressure is Low – Now What? – AirDogLiftPumps Duramax Fuel Rail Pressure is Low – Now What? DTC P1093, P0087 causing limp mode is common with this issue. Low rail pressure may or may not cause an MIL (check engine light). This is a very common problem that we hear about from our Duramax customers.
What does the P1093 error code on my LLY mean?
All with their issues – including the p1093 error code on my LLY. Many diesel trucks have fuel injection issues – it’s just as one would say nature of the beast. These Diesel engines run entirely off of compression and require a high-pressure mist of diesel fuel to keep the ignition going.