Diagnostic and DPF Unblock – Audi A3 2.0 TDI (2009 – 96,903 miles)

⚠️ DPFs can block up for lots of reasons including temperature sensors, pressure sensors, thermostats, low fuel levels, EGRs and pretty much any other code logged in the engine section. This one was due to a turbo actuator fault.

We originally came to see this one a couple of weeks ago and diagnosed the turbo issue, referred them to a garage to have the actuator replaced and back today to unblock the DPF (already done) and clean up the source of the soot with an Engine Carbon Clean.

Pre-checks showed the turbo issue now resolved and just the DPF backpressure to deal with. The manual gauge showed the excessive backpressure which confirmed the DPF Clean was required…

Diagnostic and DPF Unblock - Audi A3 2.0 TDI (2009 - 96,903 miles)
Diagnostic and DPF Unblock - Audi A3 2.0 TDI (2009 - 96,903 miles)
Diagnostic and DPF Unblock - Audi A3 2.0 TDI (2009 - 96,903 miles)

With the DPF now unblocked we connected the manual gauge back up to confirm the successful flush…

And with the Differential pressure sensor reconnected we had nice low values along with the flushed DPF…

Next step is on with the Engine Carbon Clean at https://www.f5ecc.com/33796-ECC

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