Chevrolet P1093: Fuel Rail Pressure Range/Performance

Is your scanner showing Chevrolet P1093?
No worries. We'll show you what it means and how to deal with it.

Presented by

Randy Worner

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Chevrolet P1093: Fuel Rail Pressure Range/Performance

OVERVIEW

Severity

Medium

DIY Difficulty Level

Intermediate

Repair Cost

$287-$320

Can I Still Drive?

Yes (Short-term only)

What Does The Chevrolet P1093 Code Mean?

Key on or engine running, and the ECM detected the difference between the Commanded fuel pressure and Actual fuel pressure was more than 20 MPa, or the FRP regulator fuel flow was more than 15,000 mm³ at 800 rpm.

What Are The Potential Causes Of The Chevrolet P1093 Code?

CNG fuel injector 8 connector is damaged, open or shorted
CNG fuel injector 8 control circuit is open or shorted to ground
CNG fuel injector 8 is damaged or it has failed
FICM has failed

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> GM Fuel Injection Throttle Control Actuator Module
>>> YZHIDIANF 17113698 Fuel Injectors FJ315

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

GM, 2012, Service Bullettin – Information On Identifying Duramax™ Diesel Overpower Engine Breakdown or Non-Function Due to
Aftermarket Power-Up Devices vs. Non Overpower Engine Non-Function of Pistons, Cylinders, Valvetrain
Components, DTC P003A or P111D Set.
GM, 2012, Service Bullettin – Lack of Power, Engine Will Not Rev-up, Idle Vibration, Engine Starting
Concerns, DTCs P1093, P0087, P1087, P0088 and/or P1088 Set (Diagnose and
Replace Suction Control Valve (SCV) / Fuel Rail Pressure (FRP) Regulator, if
necessary).
GM, 2012, Service Bullettin – Lack of Power, Engine Will Not Rev-up, Idle Vibration, Engine Starting Concerns,
DTCs P1093, P0087, P1087, P0088 and/or P1088 Set (Diagnose and Replace
Suction Control Valve (SCV) / Fuel Rail Pressure (FRP) Regulator, if necessary).
GM, 2015, Service Bullettin – Information On Identifying Duramax™ Diesel Overpower Engine Breakdown or Non-Function Due to
Aftermarket Power-Up Devices vs. Non Overpower Engine Non-Function of Pistons, Cylinders, Valvetrain
Components, DTC P003A or P111D Set.