AutoCodes – Chrysler – P1128 Chrysler

P1128 Chrysler Code - Closed Loop Fueling Not Achieved Bank 1

Quick Answer

The Powertrain Control Module (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 closed loop operation. Common causes include Low battery charge, Faulty Totally Integrated Power Module, Fuel delivery system. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1128 Chrysler indicates Closed Loop Fueling Not Achieved Bank 1.
Common causes
Common causes include Low battery charge, Faulty Totally Integrated Power Module, Fuel delivery system.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 70,715
How popular is this code, among other codes? Medium
Table of contents Created and updated by William Orellana on Apr 26, 2019
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Code P1128 Chrysler Description

The Powertrain Control Module (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 closed loop operation.
OBDII Code P1128 Chrysler - Closed Loop Fueling Not Achieved Bank 1 - AutoCodes.com
P1128 Chrysler Code - Closed Loop Fueling Not Achieved Bank 1

What are the Possible Causes of the DTC P1128 Chrysler?

  • Low battery charge
  • Faulty Totally Integrated Power Module
  • Fuel delivery system
  • Manifold Absolute Pressure (MAP) sensor or wiring connectors
  • O2 sensor wiring or connectors
  • Engine mechanical system
  • Faulty Powertrain Control Module (PCM)

How to Fix the DTC P1128 Chrysler?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1128 Chrysler code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1128 Chrysler Code

No Frequently Asked Questions about P1128 Chrysler Code found.

Discuss the causes and fixes for P1128 Chrysler OBDII Code

  • I really need help

  • What exactly is your problem what is the the model and year of your Chrysler.

  • tengo un CHRYSLER 300C 2006 5.7 acavo de cambiar aceite,bujias,filtro de aire, y me aparece este codigo que nose que pueda ser, el carro corre muy bien execto cuando voy a yegar a aser un alto el motor tiene un poco de vibrasion nose que es lo que pueda ser!

  • Primero inspeccione todas la connecciones y partes que quito para remover las bujias. Si todo esta bien, entoces le va a tener que cambiar el sensor de oxigeno.

  • my 2008 dodge grand caravan just shuts off unexplainably when idling smoothly it just stops it starts right back up and runs fine until the next time ,if I'm driving and it shuts off it just causes a momentary hitch. then keeps going.

  • Did you ever get help?

  • My 2008 Chrysler Town & Country is turning off when I come to a full stop. When driving it stalls and tugs. If I am stopped, when I press on the gas to go, it stalls. It doesn't do it all the time it happens once in a while. I notice it does it a lot more and tugs harder when it stalls when I use my A/C. I get the P0339 code. I have changed the Cram and Crank sensors. Then it gives me the P1128 code and the then it goes aways and gives me the P0339 code again. It's weird.

  • Unfortunately there are many things that could cause the engine to stall, both codes may come ON as a result of the engine stall, but may not be the cause. Next step is checking what is missing when the engine stall, could be fuel pressure, spark or air. You may need to install a fuel pressure gauge to check that.

  • ok, thanks. Will try.

  • Hi. We've been having the similar problem with our 2008 Dodge Grand Caravan. It stalls randomly but starts right back up. The codes p1128 and p0339 displayed. So far we've changed all plugs, wires, coil, crank sensor, cam sensor and after each change the service lights will go away but it will continue to stall randomly. Any ideas what it could be?

  • Hi. Did u find a solution to your problem?

  • Try changing the ignition switch (weird, but it was a problem with that!), had the same problem on my wife's jeep liberty and that solved it.

  • Any solution to the P1128 and P0339 codes?

  • Try fixing the P0339 code first.

    P0339 Chrysler - Crankshaft Position Sensor Intermittent

    Read more: http://www.autocodes.com/p0...

  • after more test than you could imagine, I fixed this problem by replacing the coil pack, 2007 Pacifica.
    the code P1128 accompanied along with P0339 (crank sensor- not needed) and P0300 (random misfire) and C121C (torque request signal denied) all corrected by changing the coil pack... I had also changed the 02 sensors and crank sensor with no result, the original problem was stalling,,, the engine ran great and would just die for no apparent reason, it died so often it was nearly un-driveable .

  • Great information Bob. Thank you for sharing!!!

  • I have a 2007 Chrysler 300 2.7. It drives smoothly

    . As soon as i slow down to a stop it starts to shake. The engine light is on and flashes then stops off and on.
    We have changes spark plugs, coils, manifold intake gasket, o2 sensor, canister purge valve. It is still having the problem. What else can it be??

  • For your model year the fuel injectors or the fuel pump are the more common cause of the problem. You could have a clogged fuel injectors. I recommend start by using a fuel injector cleaner additive and high octane fuel for a couple of days and monitor to see if that make any difference.

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