Also known as: 2.0 tdi, 1.6 tdi, crlb, crmb, dfga, dcxa, tdi evo, 2.0 tdi ea288
The EA189's replacement and the Volkswagen Group's current four-cylinder diesel, in 1.6 and 2.0 litre forms. It is a different engine family despite sharing displacement and badge with what it replaced — which matters because the EA189's emissions history does not transfer to it, and treating a 2016 2.0 TDI as an EA189 is a common and consequential mistake.
The emissions hardware is the substance of the diagnostic picture: SCR with AdBlue injection on most applications, plus a particulate filter and cooled EGR. That adds a whole class of fault the older engine did not have — reductant quality, injector crystallisation, tank heater and NOx sensor failures — and the corpus's P20xx and P2Bxx reagent codes describe exactly this territory.
As with any modern diesel, the recurring background cause is duty cycle rather than a component: an engine that never reaches temperature cannot regenerate its filter, and the resulting cascade looks like several independent faults at once.
Cars fitted with this engine
23 generations, across 4 makes. From the authored catalogue — an absent car means the catalogue has not reached it, not that the engine was never fitted.
Audi
Volkswagen
Information, not instruction
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What makes one worth reading:
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- What you measured, not only what you replaced.
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