Chrysler P1129: Closed Loop Fueling Not Achieved - Bank 2 Upstream
Is your scanner showing Chrysler P1129?
No worries. We'll show you what it means and how to deal with it.
Chrysler P1129: Closed Loop Fueling Not Achieved - Bank 2 Upstream
OVERVIEWWhat Does The Chrysler P1129 Code Mean?
Once the enable time has been reached and all enable conditions are met, the diagnostic will check for closed loop fuel control. If closed loop control is not active by the time the enable timer has expired, the diagnostic will fail.
What Are The Potential Causes Of The Chrysler P1129 Code?
- Restricted fuel supply line
- Fuel pump inlet strainer plugged
- Fuel pump module
- O2 sensor heater operation
- O2 signal circuit
- O2 return circuit
- O2 sensor
- ECT sensor operation
- Engine mechanical problem
- Fuel filter/pressure regulator
- Powertrain control module (PCM)
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
>>> Chrysler Genuine 5093672AA Fuel Supply Tube
>>> Fuel Pump Control Module - Mopar (68434538AA)
>>> Sangyue Oxygen Sensor for Chrysler Town & Country
>>> Coolant Temperature Sensor, ECT Temp Sensor Replace 5149077AB
>>> Genuine Chrysler (68197867AB-001) Fuel/Water Separato Filter Kit
>>> Fuel Pressure Regulator Kit - Mopar (5142345AA)
>>> Cardone 79-4407 Remanufactured Chrysler Computer (Renewed)
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Chrysler P1129, DTCDECODE.
