fuel injector output driver circuit performance bank 1

Fuel Injector Output Circuit Performance Bank 1 Code Sets On

If neither an oscilloscope, nor reference data is available, the wiser option is to refer the vehicle to the dealer, or other competent repair shop for professional diagnosis and repair.

Fuel Injector Output Circuit Performance Bank 1 Code Sets On

Typically, this code sets on the first failure cycle that occurs after the engine had been running for a period of time set by the manufacturer, which is usually between about 0.5, and 1 second.

Bank 1 refers to the bank of cylinders that contains cylinder 1 on engines with two cylinder heads.

One such control mechanism is a feedback, or injection confirmation signal that alerts the PCM to the fact that the injection signal had been received, and provided the injector is serviceable and that all other requirements are met, it will inject the required volume of fuel into the cylinder.

However, the PCM also needs to know that the injector has received the injection signal, and to accomplish this, the signal is grounded across both a Field Effect Transistor and a serial resistor.

This has the effect of creating a measurable voltage drop in the circuit, with the difference between the injection command signal, and the returned signal representing a confirmation that the injection command signal had been received by the injector.

The injector driver circuits in the PCM monitor the injection confirmation signals continually, and in the event that the voltage drop exceeds a specified level relative to the current drawn by an injector, no confirmation signal is, or can be generated.

For instance, on a 4-cylinder engine, the pairing might be injectors 1 4, and injectors 2 3, which means that if injector 1 our example engine is disabled, 4 will be disabled as well.

Moreover, when code P062D is set as a result of no injection confirmation signals being generated on one or more injectors, the PCM will force the engine into a fail-safe or limp mode, which will endure until the ignition is turned off.

Note that while this is a rare event with regard to most other codes, it is often the cause of P062DP062E.

Despite this though, all other possible causes must be investigated and eliminated before any controller is replaced.

This code is almost invariably accompanied by other codes that most often relate to misfires, or injector issues on specific cylinders, which sometimes makes it very difficult to determine the root cause of the problem, and especially if an oscilloscope with which to check the operation of the injector driver circuit(s) is not available.

If these measures do not resolve the problem, the only other viable option is to refer the vehicle for professional diagnosis and repair.

This information can be of use should an intermittent fault be diagnosed later on.

Refer to the manual for the application being worked on for the exact terminology or abbreviation used by the manufacturer to describe the injection driver circuit(s).

In these cases, it is always better to replace damaged wiring with complete OEM harnesses to prevent the possibility of poorly executed repairs causing resistance or continuity issues later on.

Clear all codes after repairs are complete, and start, and let the engine idle for few seconds before scanning the system again to see if the code returns.

However, there is a far bigger chance that an injector had failed, as opposed to the PCM, so resist the temptation to condemn the PCM out of hand.

There are very good reasons why fuel injectors on any given application have a specific resistance, so make sure that the injectors under investigation have resistances that fall within the manufacturers specifications.

Replace all injectors whose resistance does not meet specified values, but only use OEM parts to ensure a successful repair.

Long use in extreme environmental conditions and bad fuel can affect fuel injectors in various ways, one of which is making the injectors moving parts stick due to corrosion or excessive mechanical wear.

In some cases, this can cause code P062D and other injector related codes to set, so replace all injectors at least once every 150 000 miles or so to prevent this type of problem.

Fuel Injector Output Driver Circuit Performance Bank 1