Error Code P022E: What It Means & What To Do?

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OBD Code P022E is a generic Powertrain Diagnostic Trouble code which applies to all make and models of vehicles equipped with a Charge Air Cooler. It is defined as a Charge Air Cooler Bypass Control “B” Circuit Low. Diagnostics Trouble Codes are codes that the vehicle’s electronic control unit generates when it detects malfunction or other issues. P022E Charge Air Cooler Bypass Control B Circuit Low code is set when the ECM detects a lower than desired electrical value within the “B” circuit. Due to this code you may confront issues like poor acceleration, possible spark knock, engine surge etc.

OBD –II Code P022E Power Control Module (PCM) failure is defined as a Charge Air Cooler Bypass Control “B” Circuit Low. It is also termed as Turbocharger intercooler bypass actuator control B- circuit low. PCM controls and monitors the Charge Air Cooler Bypass Control Valve which controls airflow through the charge air cooler. The PCM sets this code when the Charge Air Cooler Bypass Control Valve stops working to the PCM signal. Some fault codes indicate real problems with your vehicle and some indicate faulty sensors. Common problems that trigger this code P022E are Air flap actuator failure, PCM failure and wiring issue. This code may be cause by a mechanical and/or electrical fault.

The ECM illuminates the check engine light with P022E and associated codes when it monitors a condition outside of a specific range within the intercooler bypass control circuit and/or system. P022E Charge Air Cooler Bypass Control B Circuit Low code is set when the ECM detects a lower than desired electrical value within the “B” circuit.

What causes the problem of Charge Air Cooler Bypass Control “B” Circuit Low?

• Rough running engine due to misfiring plugs.
• A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
• Faulty Air Cooler Bypass Control Valve.
• Poor electrical connection
• PCM failure
• Air flap actuator failure
• Wiring issue
• Damaged Fuse/relay
• Frayed Pin/ connector.

1. Air Cooler Bypass Control Valve - As per its name this Air Cooler Bypass Control Valve grants turbo-boosted charged air to bypass a charge-air cooler, if this valve is flawed can make packs of issues.
2. Air Flap Actuator - An air flap actuator or a damper is merely an electrical machine that moves the flap and this flap is used to open or close the certain portions of the duct in order to control which way the air goes. If it is malfunctioned will lead to this OBD Code.
3. Engine Control Module - The Engine Control Module / Powertrain Control Module generally resides in either the engine compartment or under one of your front seats, it provides the brain for the engine of the vehicle and ensures the timing and emissions control system work properly. So, if should not be malfunctioned and should be repaired or replaced on priority basis.
4. Defective Fuse/relay - Defective fuses and relays should be replaced as soon as they discovered faulty because though they are small parts but plays very important role in smooth functioning of your vehicle.
5. Pin/connector - To ensure the smooth functioning of your vehicle have a check on pin and connector as well. They should not be corroded and have broken lock tab because these could become the main factor creating this trouble code P022E.
6. Diagnostic Tool - In order to detect the error, one needs high grade diagnostic tools. Visit us today to grab amazing deals.

Below are the common symptoms for the code P022E. If you experience below mentioned symptoms please bring your vehicle to a reputable repair facility. Keep in mind; problems don’t get better over time unless rectified.

• Poor acceleration
• Catalytic converter turns hot and red
• Spark knocking
• Engine surge
• Low fuel mileage
• Limp mode

To correct or fix this code one should seek assistance from a trained automotive diagnostician but if you want to do it by yourself, please follow the below mentioned steps:

• Replace the charge air cooler bypass control valve if discovered faulty. Make sure engine is in its off position while locating this valve. Once valve is located, inspect for any physical damage.
• It is especially recommended to evacuate the valve completely to check its functionality. Once removed, investigate for any obstructions in its range of motion.
• Please check the wires involved in the circuit carefully for any kind if cuts and signs of corrosions as the harness of the bypass valve may be routed through the areas that are exposed to the elements.
• Check and verify the valve’s functionality by controlling it and observing it’s range of motion with the help of your scan tool. If you notice the valve sticking and there is nothing obstructing it, it indicates that the valve is defective.
• By using multimeter verify the integrity of the circuit by performing numerous basic electrical tests and rule out any electrical problem within the harness involved.

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This trouble code is considered generic because it applies to all makes and models of vehicles, although specific repair steps may be different depending on your car model. Keep the below mentioned points in mind while fixing this code.

• Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame.
• Check for damage to the wiring harness connector.
• Use the DVOM to test resistance and continuity on all system circuits if actuator and sensor resistance levels are in compliance with manufacturer's specifications.
• If the engine displays a miss and there wasn't a code, determine which cylinder is misfiring.
• If the exhaust manifold is visible, spay or pour a small amount of water on each cylinder exhaust port. Water will evaporate immediately on good cylinders and slowly on the missing cylinder. If this can't be accomplished pull the plugs and check the condition.

Note: If you find a related TSB, the information will often help in diagnosing the code. Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before P022E.

Common Mistakes When Diagnosing the P022E Code

Avoid committing mistakes while diagnosing the error code P022E by keeping these simple things in mind Usually people miss on these things and commit mistakes.

• Ensure that engine should be in its off position and battery should be disconnected as well before you start playing off any electrical repair and always verify and record the integrity of your battery and charging system before troubleshooting.
• Don’t forget to refer to service manual as your expensive vehicle is on stake.