P062E Fuel Injector Driver Circuit Performance Bank 2
OBD-II Trouble Code Technical Description
Fuel Injector Driver Circuit Performance Bank 2
What does that mean?
This is a generic diagnostic trouble code (DTC) and applies to many OBD-II vehicles (1996-newer). That may include but is not limited to vehicles from Ford, Honda, Hyundai, Kia, Land Rover, Toyota, Volkswagen, etc. Although generic, the exact repair steps may vary depending on year, make, model and powertrain configuration.
If your OBD-II vehicle has stored a code P062E, it means that the powertrain control module (PCM) has detected a performance issue with the fuel injector driver circuit for engine bank 2. Bank two denotes the bank of the engine that doesn’t contains the #1 cylinder.
The fuel injector driver is an integral part of the PCM or the electronic fuel injection (EFI) controller (if applicable).
The PCM controls injector timing and pulse width by applying a ground pulse to the circuit at exactly the right instant. Since a constant supply of battery voltage is already present on the circuit (whenever the ignition is on), this initiates a precise spray of fuel from the pressurized fuel injector. This action occurs for each cylinder in sequential repetition.
In addition to controlling the fuel injection system, the PCM also monitors individual fuel injector circuit feedback resistance for signs of a malfunction. This may allow the PCM to detect a problem before it is exhibited as a drivability issue.
If the PCM detects a fuel injector confirmation signal that is not within the expected parameters, a code P062E will be stored and a malfunction indicator lamp (MIL) may be illuminated. MIL illumination usually occurs on the initial failure for a code of this type.
A typical fuel injector:
What is the severity of this DTC?
A stored code P062E, or any other fuel injection related code, should be classified as severe and investigated with urgency.
What are some of the symptoms of the code?
Symptoms of a P062E trouble code may include:
What are some of the common causes of the code?
Causes for this code may include:
What are some P062E troubleshooting steps?
In order to accurately diagnose a stored code P062E, a diagnostic scanner, a digital volt/ohmmeter (DVOM), an oscilloscope, and a source of vehicle diagnostic information will be required. A scanner, such as the Snap-On Modis, with a built-in DVOM and oscilloscope will work well for this task. Without an oscilloscope, it will be impossible to monitor injector function and arrive at a successful diagnosis.
I like to begin my diagnosis by connecting the scanner to the vehicle diagnostic port and retrieving all stored codes and related freeze-frame data. Before clearing the codes, I write this information down for reference purposes. After clearing the codes from the PCM, I test-drive the vehicle until the PCM enters readiness mode or the code is reset.
If the PCM enters readiness mode without the code being reset:
Chances are that you are dealing with an intermittent condition. If the code fails to reset within a reasonable period of time, the condition may need to worsen before an accurate diagnosis can be obtained.
If the code is immediately reset:
Perform a visual inspection of all related wiring and connectors. You will want to replace burned or damaged components as required. Attempting to patch a fuel injector wiring harness often results in the PCM receiving a skewed fuel injector driver confirmation signal and additional codes being stored.
If system wiring and connectors appear to be functional, use the oscilloscope to test each individual fuel injector. Consult your source of vehicle information for diagnostic flow charts, wiring diagrams, connector face views, connector pin-out charts, and recommended testing procedures/specifications for the vehicle in question. Once the oscilloscope test leads are connected, note any inconsistencies in the wave (voltage) pattern. Replace defective fuel injectors as necessary. If no abnormalities are discovered in fuel injector operation, proceed to the next step.
After testing the fuel injectors, disconnect all controllers from the injector driver circuit and use the DVOM to test system circuits. Replace wiring and/or connectors as required.
If all fuel injectors and system circuitry is functioning as intended, suspect controller failure or a controller programming error.
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"Delete Error Code Permanently, Disable DTC Error Code Function for p062e in the ECU"
In extreme cases, we even have the option to permanently remove the specific DTC p062e and disable the function of the specific error code in the ECU. All other fault code functions will then continue to work to protect the engine. This is different from clearing an error code with a diagnostic device. We have the option to permanently remove the function of the specific error code, so that it never comes back. Also emergency running that occurs on the specific error code can be solved in most cases.
Of course we prefer to first try to solve the cause of the error code, but sometimes the only solution is to permanently disable the DTC function of p062e.
