P060C Internal Control Module Main Processor Performance
OBD-II Trouble Code Technical Description
Internal Control Module Main Processor Performance
What does that mean?
This generic powertrain diagnostic trouble code (DTC) typically applies to many OBD-II vehicles. That may include but is not limited to vehicles from Fiat, Ford, Mazda, Lincoln, Chevy, etc.
When a code P060C is stored, it means that the powertrain control module (PCM) has detected a main processor performance error. Other on-board controllers may also detect a PCM main processor performance error and cause a code of this type to be stored.
The internal control module monitoring processors are responsible for various controller self-test duties and overall internal control module accountability. Internal controller (especially PCM) temperature, as well as multiple input and output signals are constantly monitored by specific controller processors.
Whenever the ignition is on and the PCM is energized, numerous internal controller processing self-tests are initiated. In addition to running internal controller self-tests, the controller area network (CAN) also compares signals from each individual module to ensure that each controller is functioning properly. These tests are performed simultaneously.
If the PCM detects a discrepancy between any of the on-board controllers, which would indicate an internal processor error, a code P060C will be stored and a malfunction indicator lamp (MIL) may be illuminated. Multiple failure cycles may be necessary for MIL illumination, depending upon the perceived severity of the malfunction.
Photo of a PCM with the cover removed:
What is the severity of this DTC?
Internal control module processor codes should be categorized as severe. A stored code P060C could result in a no-start condition or serious drivability issues, suddenly and without warning.
What are some of the symptoms of the code?
Symptoms of a P060C trouble code may include:
Multiple drivability issues Harsh or erratic automatic transmission shifting Reduction in fuel efficiency Rough idle or stall Hesitation upon accelerationWhat are some of the common causes of the code?
Causes for this code may include:
Defective controller or programming error Bad controller fuse or power supply relay Open or shorted circuit or connectors in the CAN harness Insufficient control module groundWhat are some P060C troubleshooting steps?
Even to the most experienced and well-equipped professional technician diagnosing a code P060C can prove to be quite a challenge. There is also the issue of reprogramming. Without the necessary reprogramming equipment, it will be impossible to replace a defective controller and complete a successful repair.
If there are ECM/PCM power supply codes present, they will obviously need to be rectified before attempting to diagnose a P060C.
There are several preliminary tests that can be performed prior to declaring an individual controller defective. A diagnostic scanner, a digital volt/ohmmeter (DVOM), and a source of reliable vehicle information will be required.
Connect the scanner to the vehicle diagnostic port and retrieve all stored codes and freeze frame data. You will want to write this information down, just in case the code proves to be an intermittent one. After recording all pertinent information, clear the codes and test drive the vehicle until the code is reset or the PCM enters readiness mode. If the PCM enters readiness mode, the code is intermittent and will be more difficult to diagnose. The condition, which caused the P060C to be stored, may even need to worsen before a diagnosis can be made. If the code is reset, continue with this short list of preliminary tests.
When attempting to diagnose a P060C, information may be your greatest tool. Search y
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