Skip to content
Menu
OBD2 Scanner Blog
  • Home
  • Car Diagnostic Tool
    • MB Star Diagnosis
    • BMW Diagnostic Tool
    • GM Tech2
    • Volvo Vocom Interface
  • OBD2 Code Scanner
    • VXDIAG
  • Tech Support
OBD2 Scanner Blog

HITACHI Construction 4JJ1 P0092 Fuel Pressure Regulator Control Circuit High

Posted on November 14, 2024 by
hitachi isuzu 4jj1

Diagzone Xdiag Subscription Renew, LAUNCH LTR-01 RF Sensor, Thinkdiag Renew , Scania SDP3 Installation

Here car-auto-repair.com show you guide on how to solve ISUZU construction 4JJ1 engine P0092 fuel pressure regulator control circuit high.

hitachi isuzu 4jj1

Related Contents:

ISUZU E-IDSS 2024 2019 Engine Diagnostic Service System Free Download

ISUZU IDSS MX2-T Diagnostic Tool

 

 

P0092 DTC Information

  1. DTC description

The FRP regulator is installed on the fuel supply pump and controls the fuel amount sucked into the common rail (fuel rail). The FRP regulator is fully opened in the normal state and larger drive current results in a smaller opening of the regulator. The ECM calculates the desired common rail (fuel rail) pressure and the fuel flow rate, and compares the calculated common rail (fuel rail) pressure to the actual pressure value to determine the opening position of the FRP regulator. If the actual common rail (fuel rail) pressure is higher than the desired pressure, the FRP regulator closes to decrease the fuel flow rate. If the ECM detects an excessively high feedback current in the FRP regulator, the DTC is set.

  1. Condition for setting the DTC

Preconditions

?The FRP regulator drive duty is 10% to 90%.

Setting conditions

?The ECM detects that the feedback current of the FRP regulator is 2,400 mA or more, or more than the desired current by 1,000 mA or more.

  1. Action taken when DTC sets

?Failure is indicated* in the monitor on the machine, or the diagnostic light illuminates.

Note: *Depending on the machine manufacturer, a failure may not be indicated.

?The ECM limits the fuel injection quantity. ?The ECM limits the engine speed. ?The ECM stops multi-injection.

 

P0092 Diagnostics

Note: If the FRP regulator high-side circuit is shorted to the power supply, the engine stalls and does not start.

  1. OBD system check
  2. Current DTC check

Turn OFF the ignition switch for 30 seconds or more.

Turn ON the ignition switch.

Observe the DTC information with a trouble diagnosis scan tool. Is DTC P0092 set?

Yes

?Go to Inspection for short to power supply in FRP regulator high-side circuit.

No

Go to Intermittent conditions of engine.

 

Inspection for short to power supply in FRP regulator high-side circuit

Turn OFF the ignition switch.

Disconnect the FRP regulator harness connector.

Disconnect the ECM harness connector.

Connect a test lamp between the FRP regulator valve high-side circuit and the frame ground.

Turn ON the ignition switch. Does the test lamp illuminate?

Yes

Repair the short to the battery power supply circuit or the short to the ignition power supply circuit in the high-side circuit between the ECM and the FRP regulator.

?Go to Repair verification.

No

?Go to Inspection for short to power supply in FRP regulator low-side circuit.

 

Inspection for short to power supply in FRP regulator low-side circuit

Connect a test lamp between the FRP regulator valve low-side circuit and the frame ground.

Turn ON the ignition switch. Does the test lamp illuminate?

Yes

Repair the short to the battery power supply circuit or the short to the ignition power supply circuit in the low-side circuit between the ECM and the FRP regulator.

?Go to Repair verification.

No

?Go to Inspection for short circuit in FRP regulator circuit.

 

Inspection for short circuit in FRP regulator circuit

Inspection for short circuit in FRP regulator circuit Is the result normal?

Yes

?Go to ECM replacement.

No

Repair the circuit as necessary.

?Go to Repair verification.

 

ECM replacement

Note: Perform programming after replacing the ECM.

Procedure completion

?Go to Repair verification.

 

Repair verification

Clear the DTC with a trouble diagnosis scan tool.

Turn OFF the ignition switch for 30 seconds or more.

Start the engine.

Perform a test-run under the conditions for running the DTC.

Observe the DTC information with a trouble diagnosis scan tool. A DTC should not be set.

 

More repair cases for ISUZU engine,please refer to:ISUZU Engine Trouble Repair

How useful was this post?

Click on a star to rate it!

Average rating / 5. Vote count:

This Post: HITACHI Construction 4JJ1 P0092 Fuel Pressure Regulator Control Circuit High From ChinaOBD2 Official Blog
Please keep this link if you copy the post!

Tags: cat ops program

Post navigation

Prev: Prev: Perkins 1106D Generation E362 Engine Overspeed Error Solution
Next: Next: How to Solve Perkins 1106D EPG Engine E398 Low Fuel Rail Pressure Error

Related Posts

CG007 Godzilla Starup Updater Error Solution

CG007 Godzilla Starup Updater Error Solution

2023.04.2

Lexus E350 2013 Smart Keys All Key Lost Programming Guide

Lexus E350 2013 Smart Keys All Key Lost Programming Guide

2019.05.14

Vediamo Benz Speed Limit Signs Show (Map & MPC/Camera Data)

Vediamo Benz Speed Limit Signs Show (Map & MPC/Camera Data)

2020.05.10

FCOM Ford OBD2 Diagnostic Software Introduction

FCOM Ford OBD2 Diagnostic Software Introduction

2019.05.14

How to Turn OFF Rear Seat Belt Warning for Benz W212

How to Turn OFF Rear Seat Belt Warning for Benz W212

2023.04.4

Toyota Corolla 2013+ Keyless Go All Keys Lost Programming by Zed-Full

Toyota Corolla 2013+ Keyless Go All Keys Lost Programming by Zed-Full

2019.07.31

G-scan2 Teach in Component Function Test on BMW X5 2009 Transmission

G-scan2 Teach in Component Function Test on BMW X5 2009 Transmission

2019.06.10

Carprog Read MC68HC05 Processor Guide

Carprog Read MC68HC05 Processor Guide

2019.02.24

Choosing the Right Professional OBD II Scanner: Autel MS908S Pro II vs. Launch X431 Pad Vll vs. Autel Ultra

Choosing the Right Professional OBD II Scanner: Autel MS908S Pro II vs. Launch X...

2024.01.24

Perkins EST Software Perform ECM Flash for 404F-22T Engine

Perkins EST Software Perform ECM Flash for 404F-22T Engine

2020.08.27

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Recent Posts

  • Yanhua Module 38 Update BMW BDC2 Reflash and Replace Functions
  • Vapon Update BDC2 IMMO Module Data Erase
  • How to Replace U17 and L8 Components for OBDSTAR G3 Startup Failure?
  • Alientech Kess3 Adds Master TCU OBD-Bench-Boot Protocol
  • Scania Truck ALM Alarm System ALM404 Fault in the CAN Communication Solution

Recommend OBD2 Scanner

ME9.7 ECU Engine Computer ME9.7 ECU Engine Computer TabScan T6PT3G Diagnosis VCI for Porsche Diagnostic Tool Porsche Diagnostic Tool

Recent Comments

  • amr on MAN EOL Flash File Editor + MAN Immo Calculator Free Download
  • Pasquale Greenwald on Jungheinrich ETM/V 10-12 Tightening Torque for Screwed Connection on Brake Systems
  • VCDS on Scania SDP3 2.53.1 Diagnosis & Programming Free Download
  • Crossley on What are the functions of Iprog+ Programmer?
  • Lukas on VAG EDC15 EDC16 IMMO OFF Software Free Download

Archives

Categories

  • BMW Diagnostic Tool
  • Car Diagnostic Tool
  • Key Cutting Machine
  • Key Programming Tool
  • MB Star Diagnosis
  • OBD2 Code Scanner
  • Tech Support
  • VXDIAG

Tags

adapter Auto Pick and Decoder Car Key Copy Car Key Programmer cat Code Reader diagnostic software ECU Chip Tunning ecu programmer Ford gm handy baby Handy Baby 2 Key Programmer Handy Baby II Key Programmer HEX V2 immo iprog key Key Pro key programmer laptop Launch lish LISHI new arrivals nexiq nexiq link diesel truck interface nexiq truck diagnostic NEXIQ USB Link OBD2 obdii original program Scania VCI smart VAG COM Cable VCDS VCDS Cable VCDS VAG COM Cable vci VW wholesale X-PROG Box X-PROG Box ECU Programmer XPROG-M

Hot Selling

  • ME 9.7 ECU Engine Computer
  • MINI VCI J2534
  • NCF29XX Programmer
  • ThinkTool Pros+

Links

  • China OBD2
  • EPS Foam Machine
  • Foxdiag
  • Сканер OBD2
©2025 OBD2 Scanner Blog | Powered by chinaobd2