P208B — Reductant Pump " A" Control Performance/Stuck Off

P208B indicates that the Reductant Pump "A" is not performing as expected or is stuck in the "off" position. This pump is responsible for delivering Diesel Exhaust Fluid (DEF) to the Selective Catalytic Reduction (SCR) system, which reduces harmful nitrogen oxide (NOx) emissions.

Common causes for this code include a faulty DEF pump, electrical issues such as damaged wiring or connectors, contaminated DEF, or a malfunctioning Powertrain Control Module (PCM) .

Symptoms may involve the illumination of the check engine light, warnings about DEF system malfunctions, and potential engine performance issues.