Code Definition

P02AF — Fuel Trim at Minimum Limit - Cylinder Number 6

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

About P02AF

P02AF 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 P02AF 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 P02AF fault code is set when the Engine Control Module (ECM) detects that the fuel trim for Cylinder Number 6 is at its minimum limit. This condition suggests that the ECM is compensating for an overly rich mixture in Cylinder 6 by reducing the amount of fuel as much as possible. The fuel trim reaching its minimum limit indicates issues such as a rich running condition, potentially caused by excessive fuel delivery or insufficient air intake in that specific cylinder.

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