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Dan
Dan, ASE Certified Technician
Category: Dodge
Satisfied Customers: 1328
Experience:  Dealer Auto Technician
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Codes p1128&p1129 what are they

Customer Question

codes p1128&p1129 what are they
Submitted: 1 month ago.
Category: Dodge
Expert:  Dan replied 1 month ago.

Hello my name is***** am an ASE Master Technician and I am glad to help you with your question.

Expert:  Dan replied 1 month ago.

I am looking these up right now for you.

Expert:  Dan replied 1 month ago.

p1128

P1128-CLOSED LOOP FUELING NOT ACHIEVED - BANK 1

Additional Wiring

For complete wiring diagrams refer to:

SYSTEM WIRING DIAGRAMS for 300.

SYSTEM WIRING DIAGRAMS for Charger.

SYSTEM WIRING DIAGRAMS for Magnum.

Monitor Conditions

  1. When Monitored:

    With engine run time and coolant temperature above a calibrated value.

Set Conditions

  • Set Condition:

    The PCM detects a condition where the vehicle has remained in open loop fuel control, from a start-up condition, longer than a calibrated amount of time, when conditions would have otherwise expected closed loop operation. Two Trip Fault. Three good trips to turn off the MIL

Possible Causes

Possible Causes

INTERMITTENT DTC

FUEL DELIVERY SYSTEM

ECT SENSOR, WIRING, OR CONNECTORS

MAP SENSOR, WIRING, OR CONNECTORS

O2 SENSOR, WIRING, OR CONNECTORS

ENGINE MECHANICAL SYSTEM

POWERTRAIN CONTROL MODULE (PCM)

Perform *PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Diagnostic Test

  1. DTC IS ACTIVE

    Diagnose and repair any other active component or circuit DTCs before continuing with this procedure.

    Turn the ignition on.

    With the scan tool, select View DTCs. Copy DTC and Freeze Frame information.

    Start the engine and allow it to reach operating temperature.

    WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death.

    NOTE: Attempt to operate the vehicle under conditions similar to which the DTC was set.

    NOTE: It may be necessary to test drive the vehicle within the DTC monitoring conditions in order for this DTC to set.

    With a scan tool, select View DTCs.

    Is the status Active for this DTC?

    Yes

    1. Go to 2.

    No

    1. Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure.
  2. CHECKING THE FUEL DELIVERY SYSTEM

    Perform the diagnostic procedure for *CHECKING THE FUEL DELIVERY SYSTEM .

    Were any problems found?

    Yes

    1. Repair as necessary in accordance with the Service Information.
    2. Perform *PCM VERIFICATION TEST .

    No

    1. Go to 3.
  3. CHECKING THE ENGINE COOLANT TEMPERATURE SENSOR OPERATION

    Perform the diagnostic procedure for *CHECKING THE ENGINE COOLANT TEMPERATURE SENSOR OPERATION .

    Were any problems found?

    Yes

    1. Repair as necessary in accordance with the Service Information.
    2. Perform *PCM VERIFICATION TEST .

    No

    1. Go to 4.
  4. CHECKING THE MAP SENSOR OPERATION

    Perform the diagnostic procedure for *CHECKING THE MAP SENSOR OPERATION .

    Were any problems found?

    Yes

    1. Repair as necessary in accordance with the Service Information.
    2. Perform *PCM VERIFICATION TEST .

    No

    1. Go to 5.
  5. CHECKING THE OXYGEN SENSOR OPERATION

    Perform the diagnostic procedure for *CHECKING THE OXYGEN SENSOR OPERATION .

    Were any problems found?

    Yes

    1. Repair as necessary in accordance with the Service Information.
    2. Perform *PCM VERIFICATION TEST .

    No

    1. Go to 6.
  6. CHECKING THE ENGINE MECHANICAL SYSTEM

    Perform the diagnostic procedure for *CHECKING THE ENGINE MECHANICAL SYSTEM .

    Were any problems found?

    Yes

    1. Repair as necessary in accordance with the Service Information.
    2. Perform *PCM VERIFICATION TEST .

    No

    1. Go to 7.
  7. POWERTRAIN CONTROL MODULE (PCM)

    Using the wiring diagram/schematic as a guide, inspect the wiring and connectors relative to the components tested in this procedure.

    Look for any chafed, pierced, pinched, or partially broken wires.

    Look for broken, bent, pushed out or corroded terminals.

    Monitor the scan tool data relative to the components tested in this procedure and wiggle test the wiring and connectors.

    Look for the data to change or for a DTC to set during the wiggle test.

    Refer to any Technical Service Bulletins that may apply.

    Were any problems found?

    Yes

    1. Repair as necessary.
    2. Perform *PCM VERIFICATION TEST .

    No

    1. Replace and program the PCM in accordance with the Service Information.
    2. Perform *PCM VERIFICATION TEST .
Expert:  Dan replied 1 month ago.

P1129-CLOSED LOOP FUELING NOT ACHIEVED - BANK 2

Additional Wiring

For complete wiring diagrams refer to:

SYSTEM WIRING DIAGRAMS for 300.

SYSTEM WIRING DIAGRAMS for Charger.

SYSTEM WIRING DIAGRAMS for Magnum.

Monitor Conditions

  1. When Monitored:

    With engine run time and coolant temperature above a calibrated value.

Set Conditions

  • Set Condition:

    The PCM detects a condition where the vehicle has remained in open loop fuel control, from a start-up condition, longer than a calibrated amount of time, when conditions would have otherwise expected closed loop operation. Two Trip Fault. Three good trips to turn off the MIL

Possible Causes

Possible Causes

INTERMITTENT DTC

FUEL DELIVERY SYSTEM

ECT SENSOR, WIRING, OR CONNECTORS

MAP SENSOR, WIRING, OR CONNECTORS

O2 SENSOR, WIRING, OR CONNECTORS

ENGINE MECHANICAL SYSTEM

POWERTRAIN CONTROL MODULE (PCM)

Perform *PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Diagnostic Test

  1. DTC IS ACTIVE

    Diagnose and repair any other active component or circuit DTCs before continuing with this procedure.

    Turn the ignition on.

    With the scan tool, select View DTCs. Copy DTC and Freeze Frame information.

    Start the engine and allow it to reach operating temperature.

    WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death.

    NOTE: Attempt to operate the vehicle under conditions similar to which the DTC was set.

    NOTE: It may be necessary to test drive the vehicle within the DTC monitoring conditions in order for this DTC to set.

    With a scan tool, select View DTCs.

    Is the status Active for this DTC?

    Yes

    1. Go to 2.

    No

    1. Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure.
  2. CHECKING THE FUEL DELIVERY SYSTEM

    Perform the diagnostic procedure for *CHECKING THE FUEL DELIVERY SYSTEM .

    Were any problems found?

    Yes

    1. Repair as necessary in accordance with the Service Information.
    2. Perform *PCM VERIFICATION TEST .

    No

    1. Go to 3.
  3. CHECKING THE ENGINE COOLANT TEMPERATURE SENSOR OPERATION

    Perform the diagnostic procedure for *CHECKING THE ENGINE COOLANT TEMPERATURE SENSOR OPERATION .

    Were any problems found?

    Yes

    1. Repair as necessary in accordance with the Service Information.
    2. Perform *PCM VERIFICATION TEST .

    No

    1. Go to 4.
  4. CHECKING THE MAP SENSOR OPERATION

    Perform the diagnostic procedure for *CHECKING THE MAP SENSOR OPERATION .

    Were any problems found?

    Yes

    1. Repair as necessary in accordance with the Service Information.
    2. Perform *PCM VERIFICATION TEST .

    No

    1. Go to 5.
  5. CHECKING THE OXYGEN SENSOR OPERATION

    Perform the diagnostic procedure for *CHECKING THE OXYGEN SENSOR OPERATION .

    Were any problems found?

    Yes

    1. Repair as necessary in accordance with the Service Information.
    2. Perform *PCM VERIFICATION TEST .

    No

    1. Go to 6.
  6. CHECKING THE ENGINE MECHANICAL SYSTEM

    Perform the diagnostic procedure for *CHECKING THE ENGINE MECHANICAL SYSTEM .

    Were any problems found?

    Yes

    1. Repair as necessary in accordance with the Service Information.
    2. Perform *PCM VERIFICATION TEST .

    No

    1. Go to 7.
  7. POWERTRAIN CONTROL MODULE (PCM)

    Using the wiring diagram/schematic as a guide, inspect the wiring and connectors relative to the components tested in this procedure.

    Look for any chafed, pierced, pinched, or partially broken wires.

    Look for broken, bent, pushed out or corroded terminals.

    Monitor the scan tool data relative to the components tested in this procedure and wiggle test the wiring and connectors.

    Look for the data to change or for a DTC to set during the wiggle test.

    Refer to any Technical Service Bulletins that may apply.

    Were any problems found?

    Yes

    1. Repair as necessary.
    2. Perform *PCM VERIFICATION TEST .

    No

    1. Replace and program the PCM in accordance with the Service Information.
    2. Perform *PCM VERIFICATION TEST .
Expert:  Dan replied 1 month ago.

Please reply to this if you need more help and we can continue this conversation at no extra charge. This does not have to be my only answer. If you are satisfied with my service, please rate at the top of the screen. Rating does not close out your question. Remember, sometimes it is difficult to completely diagnose your vehicle without being there, but I will try to give you the best answer I can. Hoping to be giving you 5 star service.

Thanks

Expert:  Dan replied 1 month ago.

Hello again Dan here,

I am contacting you because the post has not been closed or rated.

This question is coming up on 7 days which means it will time out and close.

You have already paid to get this question answered, but you have not rated.

Let me help some more. Is there anything else I can help you with?

If I did not give you 5 star service, please let me know what I missed.

Thanks