P0067 - OBD Trouble Code

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Do you notice the Check Engine Light On, on the car dashboard? Is there a loss of engine power and deceleration? If these are the problems, then the PCM might indicate OBD code P0067 being flashed and stored in the system. The engine can also go into failsafe mode to protect it from further damages.

OBD Code P0067 is defined by Air Assisted Injector Control Circuit High problem.

The OBD Code P0067 code means that there is a higher voltage from the air assisted injector system circuit than was specified by the manufacturer being detected by the PCM (Powertrain Control Module). If the voltage goes outside of its threshold, the Check Engine Light will be illuminated.

One cause of the P0067 code could be that one of the wires in the air assisted injector circuit has a short to ground allowing excess voltage into the circuit. It is also possible that the portion of the powertrain control module that controls the air assisted injector system may have failed, which would require replacement of the powertrain control module.

What causes the problem of Air Assisted Injector Control Circuit High?

• Broken/damaged/corroded Wiring/Harness and connectors
• Injector or Hoses/Clamps having vacuum leaks
• Fuse/relay can be defective
• Air Assisted Fuel Injector can be damaged
• PCM (Powertrain Control Module) can be fault/damaged

1. Powertrain Control Module - P0067 error code also relates to problems with the powertrain control module. If the PCM reads wrong voltage readings from the circuit despite them being correct, it can cause the error, without it actually being mistake of any of the components, expect for the PCM itself. Thus, replace/reprogram it immediately.
2. Diagnostic Tool - In order to detect the error, one needs high grade diagnostic tools. A qualified mechanic will require factory grade scanning and diagnostic tools to correct the OBD code P0067 error. Buy best diagnostic tools from us now!
3. Injector Circuit - Check of problems with the injector circuit as there might be damaged circuit problems leading to poor engine performance. Resolve faulty circuit problem immediately.
4. Injector System - Damaged injector system components hamper the fuel delivery system and thus impacts the engine performance. Replace faulty components now!
5. Injector Valve - Replace damaged injector valve as there can be leakages in the injector system. Buy new valve now!

Symptoms of the P0067 code could include damage to multiple parts of the air assisted injector system, if the voltage this system is receiving is beyond specification.

The air assisted injector valve, the wiring in the circuit for this system, the injectors or the powertrain control module could be damaged depending on where the source of the problem is located.

The engine may not run differently immediately, however, once other system damage has occurred, the engine may stall during deceleration.

• Replacement of wirings associated with the fuel injection system
• Replacement of injector system components
• Replacement of faulty injector circuit
• Replacement of air assisted injector valve

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Take help of a qualified mechanic to diagnose the OBD Code P0067 error. Make use of professional diagnostic tools to scan and diagnose this problem.

• The diagnosis starts by first checking the wiring in the system for shorts to other circuits or any damage to the circuit that may exist. Use a high-quality scan tool to test the vehicle’s powertrain control module for faults related to the air assisted injector system.
• There could be potential damage to the parts of the system due to the excess voltage, and the air assisted injector valve and the injectors themselves are needed to be tested for proper functionality.
• Once the source of the problem is found as well as checked for all other faults, the repair process can begin to get the vehicle’s condition corrected and avoid further damage.
• If all the components are functioning properly, check for faults in the Powertrain Control Module. Although this problem is rare, but can lead to wrong interpretation of the correct data, thus impacting the vehicle’s performance. So, replace the faulty components as necessary.

Common mistakes when diagnosing the P0067 code

• Replacing the powertrain control module without properly testing it and could potentially be a waste of money as a powertrain control module is usually very costly.
• It is very important to test every part of a system that you are diagnosing to verify whether all parts are functional or faulty before replacing any parts.