Hummer P2585 Fuel Additive Control Module Warning Lamp Request

Description

OBD-II Trouble Code Description for P2585 Hummer

Fuel Additive Control Module Warning Lamp Request

What does this mean?

OBD2 Code P2585 Hummer definition:
The PCM monitors the PCL lamp condition using the PCL lamp operation signal that from the fuel additive control module to instrument cluster. When the fuel additive control module detects that the fuel additive amount is empty. The fuel additive control module sends the signal to instrument cluster and PCM. If the PCM received the signal, the PCM determines that the fuel additive control module requests the PCL lamp to ON.

Symptoms

Possible sumptoms of OBD code P2585 Hummer
Lamp On, Maybe Limp Mode

Causes

Possible causes of OBD code P2585 Hummer
No fuel additive in fuel additive tank
Fuel additive system malfunction
Fuel additive level sensor malfunction
Fuel additive control module malfunction

Possible Solutions

Diagnostic procedure

STEP

INSPECTI HummerON

ACTION Hummer

1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDE HummerD
???Has the FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2
VERIFY REPAIR INFORMATION AVAILABILIT HummerY
???Verify related service repair information availability.
???Is any related repair information available?
Yes
Perform repair or diagnosis according to the available repair information.
If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA
???Is P2585 Hummer on FREEZE FRAME DATA?
Yes
Go to the applicable DTC inspection.
No
Go to the next step.
4
CHECK Hummer PCL LAMP STATE
???Start the engine.
???Check the PCL lamp state.
???Does the PCL lamp illuminate?
Yes
Refill the fuel additive, then go to Step 8.
No
Go to the next step.
5
INSPECT FUEL FILLER CAP SWITCH
???Inspect the fuel filler cap switch.
???Is the fuel filler cap switch normal?
Yes
Go to the next step.
No
Replace the fuel filler cap switch, then go to Step 8.
6
INSPECT FUEL ADDITIVE LEVEL SENSOR
???Inspect the fuel additive level sensor.
???Is the fuel additive level sensor normal?
Yes
Go to the next step.
No
Replace the fuel additive level sensor, then go to Step 8.
7
IDENTIFY MALFUNCTI HummerON AT FUEL ADDITIVE CONTR HummerOL MODULE OR NOT
???Make sure to reconnect all disconnected connectors.
???Clear the DTC from the PCM memory using the M-MDS.
???Start the engine and warm-up to normal operating temperature.
???Run the vehicle under the FREEZE FRAME DATA stored condition.
???Retrieve the DTC using the M-MDS.
???Is the PENDI HummerNG CODE same DTC present?
Yes
Inspect and repair or replace the fuel additive pump, then go to the next step.
No
Replace fuel additive control module, then go to the next step.
8
VERIFY THAT DTC P2585 Hummer TROUBLES HummerHOOTING IS COMPL HummerETED
???Make sure to reconnect all disconnected connectors.
???Clear the DTC from the PCM memory using the M-MDS.
???Start the engine and warm-up to normal operating temperature.
???Run the vehicle under the FREEZE FRAME DATA stored condition.
???Retrieve the DTC using the M-MDS.
???Is the PENDI HummerNG CODE same DTC present?
Yes
Replace PCM, then go to the next step.
No
Go to the next step.
9
VERIFY AFTER REPAIR PROCE HummerDURE
???Perform “After Repair Procedure”.
???Is there any DTC present?
Yes
Go to the applicable DTC inspection.
No
Troubleshooting completed.

Related Codes

P2584 Hummer

OBD-II Trouble Code Description for P2585 Hummer

Fuel additive control module warning lamp request


The OBD2 Code Information Be Applicable For Hummer:

2009 Hummer H3T Alpha,2008 Hummer HX Concept,2008 Hummer H3 Wagon Concept,2008 Hummer H3 Alpha,2008 Hummer H2,2007 Hummer H3 Open Top,2007 Hummer H3X,2007 Hummer H3R Off Road Concept,2007 Hummer H2 Safari Concept,2006 Hummer H3,2006 Hummer H2 SUT Limited Edition,2006 Hummer H1 Alpha,2005 Hummer H3 Street,2005 Hummer H2 SUT,2004 Hummer H2 SUT Concept,2004 Hummer H2H Hydrogen Concept,2004 Hummer H2,2004 Hummer H1,2003 Hummer Humvee Military Vehicle,2003 Hummer H3T Concept,2003 Hummer H2 with GM Accessories,2003 Hummer H2 SUV,2003 Hummer H2 SUT Dirt Sport Concept,2003 Hummer H1,2003 Hummer Bike,2002 Hummer H2 SUV Concept,2002 Hummer H1 10th Anniversary Edition,2002 Hummer H1,2001 Hummer H1 Alpha Concept

 

Note:

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