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Diagnostic trouble code (DTC) P0601 stands for "Internal Control Module Memory Checksum Error." It is triggered when the powertrain control module (PCM) detects an internal problem, typically a failed Memory checksum test. The PCM's memory checksum test is performed regularly.Oct 27, 2023
U1411 Implausible Fuel Volume Signal ReceivedPossible Causes Setting Conditions
CAN 'C' Bus circuit is open or shorted to ground
Cluster module has failed
FCM has failed
PCM has failed
Key on or engine running; and the PCM determined that the Fuel Volume signal it received was implausible.
This code sets in 1 Trip(s).
This code will turn on the MIL (Malfunction Indicator Lamp) Vehicle Application: 2005 Jeep Grand Cherokee Laredo 4.7L, Vin N, Eng Cfg V8
Customer Concern: Has 11 codes. U0101, U110C, U0121, P0480, U1120, U0103, U1411, U110E, P000B, U0100, U0002. At this time there is a no crank condition.
Tests/Procedures: 1. Clear the codes and see what comes back. These are all communication codes.
2. Disconnect the modules one at a time when it is acting up and see when the communication comes back.
Potential Causes: Controller Area Network (CAN) C Module
Tech Tips: On this vehicle it turned out the Occupant Restraint Controller (ORC) which is on the Controller Area Network (CAN) B bus was actually causing the problem. It was also taking down the Controller Area Network (CAN) C bus at times.
I hope this helps.
does this car have a timing belt on it did it break , open the air box spray a little ether in it should start ,do not disconnect anything just do this , get back ,
12.5 with the engine running? Should be battery voltage and you need the find the loss. The Maf should have ground as good as the battery ( common to fail by 2 volts ( needs fixed)) Power should be battery ( common to be 1/2 volt off) Singnal wire should be 5 volts unplugged with the key on and not running. Troble code not common as thats not the normal way their numbered what makes you think you have troble is the check engine light on ? Who checked these codes and what makes you think theirs a maf problem? What does the car run like ? Stall hesite, bog not start drink gas fail to pas? Sentras go like hell and stop on a dime if theirright and they stay that way till they blow or lose an injector ( injectoe failure is common over 150 thou.) Mileage ( unknown) Manuel or auto ( unknown) driving problem if any ( unknown)
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