Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with a part of the car that helps cool the air going into the engine. It's not working right because the computer isn't getting the right signals.
The P022B code is triggered when the engine control module (ECM) detects a low voltage signal from the charge air cooler bypass control circuit A.
The charge air cooler bypass is responsible for controlling the flow of air around the charge air cooler. This system helps manage the temperature of the air entering the engine, improving efficiency and performance. A low circuit signal indicates that the voltage is below the expected range, which can affect engine performance.
• Check Engine Light is on
• Reduced engine performance
• Poor fuel economy
• Faulty charge air cooler bypass valve
• Wiring issues such as shorts or open circuits
• Faulty ECM or control module
ECM: Engine Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code
• Inspect the wiring and connectors for damage
• Test the charge air cooler bypass valve for proper operation
• Repair or replace damaged wiring or connectors
• Replace the charge air cooler bypass valve
• Reprogram or replace the ECM if necessary
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Dodge Ram
• Regular maintenance and inspections
• Ensure proper connections and wiring integrity
• Use quality replacement parts
Sensor Issue
• Avoid driving at high speeds until the issue is resolved
• Have a professional mechanic inspect the vehicle
• Do not ignore the Check Engine Light
Check with the vehicle manufacturer for warranty coverage on emission-related components.
This code has been reported in various turbocharged vehicles where the charge air cooler system is crucial for performance.
Moderate – Address the issue soon to prevent potential engine performance problems.
Driving with this code may not be illegal, but it can affect vehicle emissions and performance.
• Engine at operating temperature
• Vehicle in a safe, stationary position
The charge air cooler bypass valve is typically located near the turbocharger or the intercooler system.
Q: Can I drive with a P022B code?
A: It's not recommended to drive for long periods with this code as it can affect engine performance.
Q: How can I reset the Check Engine Light after fixing the issue?
A: Use an OBD-II scanner to clear the code after repairs are completed.
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