Engine carbon clean Mercedes A180 CDI
⚠️ Just bought a vehicle? Service or MOT due? Or maybe just not seen us for a while?
Here we have a recently purchased Mercedes A180 CDI (2013 – 101,685 miles) booked in for vehicle diagnostic inspection and Engine Carbon Clean.
Vehicle Diagnostic Inspection and Engine Carbon Clean Results
ℹ️ The owner booked us shortly after purchasing the vehicle, just 997 miles after sale, for a vehicle diagnostic inspection and engine carbon clean to check for any underlying issues.
Initial inspection and diagnostics
Our initial visual inspection found no obvious issues within the engine bay. However, diagnostic checks revealed several fault codes that had appeared since purchase. These codes had been cleared before the sale, approximately 997 miles earlier. The full diagnostic history was saved and shared with the owner.
Live data monitoring showed healthy readings across most systems. The exception was a negative reading on the DPF pressure sensor, which became more negative when the engine was revved.
DPF regeneration issues identified
Further investigation into the regeneration history showed that the vehicle had not successfully regenerated for 997 miles. The previous ten regeneration attempts had mostly failed due to a fault.
❗ Combined with the negative DPF pressure readings, this suggests the pressure sensor may have been replaced prior to purchase, but potentially wired or piped incorrectly, explaining the lack of fault codes at sale.
Engine carbon clean results
We carried out a full engine carbon clean, and the improvement was clear. The engine quickly smoothed out, became quieter, and by the end of the process was running smoothly, responsively, and more efficiently.
Next steps
❗ The owner can now get the warranty company involved regarding the DPF sensor.
☑️ Full live data Diagnostics
☑️ Which? Trusted Traders approved Engine Carbon Clean
☑️ Safety first, fully insured and IMI Certified
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