Code Definition

P16A6 — Selective Catalytic Reduction (SCR) System – End of Line

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Land Rover

About P16A6

P16A6 is a manufacturer-specific powertrain diagnostic trouble code recorded for Land Rover vehicles. 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.

P16A6 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

DTC P16A6 is set by the Engine Control Module (ECM) when the SCR system fails an end of line or commissioning plausibility check. This test verifies correct installation, configuration, and basic functionality of the SCR system, typically after vehicle production, control module replacement, SCR component replacement, or software programming. The fault is logged when expected SCR system responses, learned values, or calibration data are missing, invalid, or outside specified limits, indicating the system has not been correctly initialised or validated. When the code is set, the vehicle may dis...

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