Code Definition

P0606 — PCM Processor Fault

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

About P0606

P0606 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.

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 P0606 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 P0606 fault code is set when the Engine Control Module (ECM), often referred to as the Powertrain Control Module (PCM) in some vehicles, detects a fault in its internal processor. This code suggests that there is a critical problem with the PCM's computing functions, which are essential for managing and controlling various aspects of the vehicle's engine and transmission. The processor in the PCM is responsible for interpreting data from various sensors and executing control strategies for engine management, fuel delivery, emission control, and transmission operation. A processor fault in ...

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