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P0171 Fuel Trim System Lean – Thermostat stuck shut – Vauxhall Zafira 1.6 (2008 – 124,352 miles)

❗ Live Data Diagnostics is essential to understand what’s happening with a vehicle.

🚗 Vauxhall Zafira 1.6 petrol (2008 – 124,352 miles) owned since before Christmas.

🙋 Reason for booking in…
‘Engine Light coming on for running lean codes’

🔎 Initial inspection found no obvious issues in the engine bay apart from it being well up to temperature.

📊 Initial code read found…
P0171-52 Fuel Trim System Lean

🔎🔎 We dived straight into the live data and sure enough the vehicle was running very hot at 112°C and had to pop the bonnet and pop the heating on full to bring the temperatures down to 98°C.

🧑‍🔧 On with the clean and we kept the bonnet up and heating on full hot to vent the temperature (it still ran at 100°C under these conditions) and crept it through the clean. By the end it was quiet, smooth and responsive again and the owner can now sort out a new thermostat ASAP.

☑️ Full Diagnostics
☑️ Engine Carbon Clean
☑️ Safety first, fully insured, IMI Certified and Which? Trusted Traders approved.

#Vauxhall #Zafira #WhichTOTM #whichtrustedtrader #IMICertified #prevention #Maintenance #servicing #diagnostics #Derbyshire #Leicestershire #Nottinghamshire #Northamptonshire #Rutland #Lincolnshire #MPG #performance #Engine #Carbon #Clean #Taxi #MOT #DPF #emissions #warranty

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