DPF light illuminating frequently??

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⚠️ DPF light on more frequently?
Is the engine running cold? If so this could be preventing the DPF regenerating correctly.
Engine dropping into reduced power / limp mode?

Don’t delay, call today Engine carbon clean may be able to help…

🚗 Here we have a Audi A3 1.9tdi 112k miles, which had recently developed a recurring dpf regeneration issue booked in for diagnostic consultation.

🔎 We arrived and initial inspection of the engine bay found no visual issues. All pipes, wires and components looking OK.

📊 Initial diagnostics identified no fault codes.

Next we checked key components such as turbo, injectors, MAF sensor and EGR all working correctly.
However….Monitoring of engine temperatures highlighted a faulty coolant thermostat which was allowing the engine to run cool. We managed to get temps up to 93°C (correct operating temperature) but when cabin heater was switched on it fell to 78°C combine that with air flow through the radiator when driving and this would explain why the DPF isn’t regenerating correctly( must be consistently above 85°C to regenerate correctly)

Customer advised and a new stat was ordered ready for fitting.
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