WebNov 26, 2024 · Diagnose P1128 Chrysler vehicles Diagnose and fix P1128 Chrysler, Dodge, Jeep. A P1128 Closed Loop Fueling Not Achieved – Bank 1 means that the PCM isn’t seeing the O2 readings it needs to change from open loop (default factory programming determines air/fuel mixture) to closed loop (PCM varies air/fuel mixture based on live … WebNov 12, 2024 · Best answer. P1128 Closed loop not achieved Bank 1. This code condition occurs when the engine does not achieve closed loop from a calibrated amount of time what can affect this are coolant temperature sensor such as the thermostat. If this was a thermostat issue you would also get P1129 which is for Bank 2.
Pulling Codes: The Story of Codes P1128 and P1129
WebConclusion. In conclusion, the P1129 code is a diagnostic trouble code that refers to a problem with the oxygen sensors or the wiring harness. The code will set a P1129 code and illuminate the Check Engine Light when the PCM senses that the oxygen sensors have been swapped from bank to bank. There are several possible repairs that may fix this ... WebApr 27, 2024 · The cost of diagnosing the P1129 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour. how did the tmnt die
Code P1129 Chrysler: Closed Loop Fueling Not Achieved …
WebApr 27, 2024 · Code P1129 Description The Manifold Αbsolute Pressure (MΑP) sensor generates a signal that is proportional to the amount of vacuum in the intake manifold. … WebFeb 20, 2010 · A code P0128 may mean that one or more of the following has happened: Low engine coolant level. Leaking or stuck open thermostat. Faulty cooling fan (running too much) Faulty coolant temperature (ECT) sensor. Faulty intake air temperature (IAT) sensor. Possible Solutions. Past experience indicates that the most likely solution is to replace … WebJan 27, 2016 · Engine running; ECT signal more than 158ºf, and the PCM detected that the engine 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. This code sets in 1 Trip(s). how did the townshend act end