Fault code P062D – fuel injector driver circuit performance (Bank 1)

Fault code P062D is called “Fuel Injector Driver Circuit Performance (Bank 1)” but in different programs it may be called differently. This fault designation applies to all vehicles equipped with OBD-II.

Technical description and explained code P062D

Stored code P062D means that the Powertrain Control Module (PCM) has detected a problem with the operation of the fuel injector driver circuit. Bank 1 indicates the engine side containing cylinder number one.

Fault code P062D – fuel injector driver circuit performance (Bank 1)

Fuel systems use a variety of components to control and monitor volume, timing, pressure, etc. Fuel injectors were introduced as a replacement for the carburetor because they are more efficient and effective in controlling the fuel supply.

The fuel injector driver is part of the PCM or electronic fuel injection (EFI) controller.

The PCM controls the injector’s throttle timing and pulse width by applying a ground pulse to the circuit at the right moment. Since DC battery voltage is already present in the circuit, this initiates precise atomization of fuel from the pressurized fuel injector.

In addition to controlling the fuel injection system, the PCM also monitors the feedback resistance in the fuel injector circuit for signs of failure. This allows the PCM to detect a problem before it affects drivability.

If the PCM detects a fuel injector confirmation signal that is not as expected, code P062D will be stored. The Malfunction Indicator Light (MIL) will also illuminate.

Symptoms of vehicle malfunctions

The main signal that an error P062D has occurred is the Malfunction Indicator Lamp (MIL) is also known as the CheckEngine Light.

It can also be warning signs such as:

  1. Check engine control lamp on the control panel will light up (the code will be recorded in the memory as a malfunction).
  2. Unstable engine operation.
  3. Poor acceleration.
  4. Floating revolutions, as well as attempts to stall at idle.
  5. Possible ignition skips in the engine cylinders.
  6. The car engine may run unsteadily.
  7. Decrease of the engine power.
  8. Increased fuel consumption.

Fault P062D is a serious error, as it may cause engine and driving problems. It is recommended to correct it as soon as possible to avoid serious damage to the engine or other components.

Factors that can cause this error code

The error code P062D can mean that one or more of the following problems have occurred:

  • Failure of one or more fuel injectors (Bank 1).
  • Breakage or short circuit of electric wires in the injector driver circuit.
  • Bad electrical connection in the circuit connector.
  • Faulty electronic fuel injection (EFI) controller.
  • Sometimes the cause is a defective module (PCM).

How to fix or reset OBD-2 code P062D

Some suggested steps for troubleshooting and fix the error code P062D:

  1. Read all stored data and error codes with an OBD-II scan tool.
  2. Clear the error codes and test drive the vehicle to see if code P062D appears again.
  3. If the code appears, visually inspect the electrical wires and connectors related to the injector driver circuit.
  4. Check the operation of the fuel injectors (Bank 1).
  5. Measure voltage in injectors supply circuit, replace failed injectors if necessary.
  6. If no problems are found, check and replace the PCM or EFI control module if necessary.

Diagnose and repair of problems

It’s a good idea to first look up the Technical Service Bulletins (TSB) for your specific make of car with error P062D. If the problem is described, following the instructions may save you time and money in diagnosing and correcting the problem.

Visually inspect all wiring and connectors leading to the fuel injectors (Bank 1). Look carefully for abrasions, bare wires, or breaks. Also look for melted or otherwise damaged areas. Repair if necessary.

Sometimes water or fluids can stagnate in the nozzle seating areas. This increases the chance that the sensor connectors, as well as other electrical connections, will become corroded.

Checking the injectors

If the system wiring and connectors are serviceable, use an oscilloscope to check each individual fuel injector. With the oscilloscope wires connected, note any inconsistencies in the wave pattern. If necessary, replace the defective fuel injectors.

If no abnormalities are found in the fuel injectors, disconnect the circuit from the PCM and the fuel injector. Use a multimeter to determine if the wires are in good working order, and correct any problems to correct error P062D.

If all fuel injectors and system circuits are correct, a controller failure or programming error has probably occurred.

On which vehicles does this problem occur most frequently

Fault code P062D can occur on different vehicles but there are statistics on which brands this occurs most often. Here is a list of some of them:

  • Ford (Ranger, Tourneo Custom, Transit)
  • Honda
  • Hyundai (HD78, ix35)
  • Kia (Sorento)
  • Land Rover (Discovery)
  • Opel
  • Peugeot (Boxer)
  • Scion (FR-S)
  • Ssangyong (Actyon, Kyron)
  • Toyota (Avensis, Corolla, Land Cruiser, RAV4, Verso)
  • Volkswagen (Touareg)

Fault code P062D can sometimes be found with other errors. The most common are the following: P0451, P062E.

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