Code Definition

P022C — Intercooler bypass control A solenoid Circuit High

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P022C

P022C is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P022C is stored, the module has detected a signal or supply voltage higher than the expected operating range.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P022C is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The P022C fault code is activated when the engine control module (ECM) detects a higher than normal voltage in the circuit of the Intercooler Bypass Control Solenoid 'A'. This typically indicates an electrical fault, such as a short to power within the circuit. High voltage in this circuit can result in the malfunctioning of the solenoid, affecting its ability to regulate the airflow in the intercooler system. This is particularly critical in turbocharged engines where efficient intercooler operation is essential for optimal engine performance.

Quick Facts