P0065 OBD Error Code: Problem & Solutions

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Check Engine Light On, poor throttle response, lost acceleration, and engine stalling are the major symptoms indicating OBD code P0065 flashing in the PCM. Thus, it is important to diagnose this problem properly and checking each component for damages.

The Air Assist Injector allows the engine to reach operating temperature faster on start up with efficient fuel to air ratios and proper engine combustion process. When the Powertrain Control Module (PCM) detects an incorrect signal from the Air Assist Injector, it will set code P0065.

What causes problem of Air Assisted Injector Control Range/Performance?

• Wiring/Harness broken, damaged, corroded, or open
• Vacuum leakage in Injector or Hoses/Clamps
• Defective Fuse/relay
• Faulty Air Assisted Fuel Injector
• ECM issue Pin/connector problem

1. Engine Control Module - OBD Error Code P0065 can also be due to faulty EVMs. It’s better to get the faulty electricals replaced as soon as possible. Replace faulty ECM today!
2. Powertrain Control Module - P0065 error code also relates to problems with the powertrain which can store and flash wrong error code. Find all the Powertrain related parts with us.
3. Diagnostic Tool - In order to detect the error, one needs high grade diagnostic tools. Visit us today to grab amazing deals.
4. Air Assisted Injector System - This system if faulty will impact the fuel delivery system and the air to fuel ratio of the vehicle, thus lowering the engine output. Thus, a thorough check is in order.
5. Air Assisted Fuel Injector - This injector if faulty, will impact the combustion process in the combustion chamber and thus needs replacement. Buy now!
6. Throttle Body Assembly - The throttle body is an essential part of the inlet air stream of a modern gasoline engine. In combination with the electronic throttle control system, the throttle body assembly is designed to control the amount of fresh air entering the engine. Thus, replace the components if found faulty.

Rough idling, engine stalling, and engine dying are common symptoms of the OBD code P0065. The air assisted injector system works to atomize the fuel better when the throttle closes after acceleration. During heavy acceleration, more fuel is necessary to keep the engine running correctly.

The rate of fuel changes, when the throttle closes and deceleration begins. The air assisted injector system assists in this sudden change in fuel rate and keep the engine running smoothly. If the system doesn’t function properly, the air-fuel mixture at idle may be out of specification, thus causing the above stated symptoms to occur.

• Throttle Body Service
• Replace faulty wiring/connectors
• Replace faulty PCM

At Parts Avatar Canada, find the best quality replacement and performance parts at the best price in the market to correctly diagnose the OBD Code P0065 error.

• Visually inspect all wiring and connectors.
• Check for shorted or burned wiring and replace circuitry and connectors, as required.
• Connect the scanner to the diagnostic connector and record all stored trouble codes and freeze frame data.
• After clearing the codes, operate the vehicle to see if the code returns. If the code fails to immediately return, you may have an intermittent condition.
• Inspect vacuum hoses and mounting gaskets for discrepancies.
• Repair or replace damaged, disconnected, or corroded components and/or wiring/connectors and retest the system to ensure that repairs were successful. If the code returns immediately, get a wiring schematic and/or a connector view for the air assisted injection system of your vehicle.
• Examine voltage and ground signals at the air injection solenoid and compare the findings with manufacturer’s specifications.
• Repair open, shorted, or disconnected circuits. If there is no voltage present, check system fuses and relays. If the ground is not present, look for loose or corroded ground straps and wires near the battery and engine block.
• Examine the solenoid operation as the solenoid is commanded with the scanner. If the solenoid electrical connector voltage is in line with manufacturer’s specifications, use the digital voltmeter to test solenoid resistance and compare your findings with manufacturer’s specifications.
• Replace the solenoid if resistance levels do not coincide with manufacturer’s specifications. If the solenoid, wiring, and connectors check out, a circuit resistance and continuity test is performed.
• Always disconnect any related computerized controllers from the circuit prior to testing resistance. Repair or replace any shorted or open circuits and retest the system to make sure that it is repaired correctly. If the system circuitry appears to be normal, suspect a defective PCM.

Common mistakes when diagnosing the P0065 code

Replacing the air assisted control valve without testing it can be the most common mistake. This is called a process of elimination diagnosis and can often times lead to wasted time and money.

It is very important to follow the manufacturer's diagnostic procedure for testing certain parts to make sure they are actually faulty before replacing them.

• Always check for Powertrain Control Module (PCM) failure
• Examine Throttle body assembly for failure
• Wiring and connector related issues