Code Definition

P023A — Intercooler coolant pump open circuit

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

About P023A

P023A 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 P023A is stored, the module has detected an open (broken or disconnected) electrical path in the monitored circuit.

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 P023A 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 P023A fault code is activated when the engine control module (ECM) identifies an open circuit condition in the intercooler coolant pump's electrical circuit. This pump is crucial for circulating coolant through the intercooler system, especially in turbocharged engines, to maintain optimal temperature. An open circuit implies a complete break in the electrical pathway, which could be due to severed wires, disconnected connectors, or a failure within the pump itself. This prevents the coolant pump from operating, potentially leading to reduced cooling efficiency and increased engine tempera...

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