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How to Replace the Lambda Sensor on a Ford Fiesta

Model: Ford Fiesta Fiesta 5, MK 5, MK V - Years 2002-2008
Part: Oxygen sensor

Lift the front bonnet of your car and secure it with the prop rod. Remove the plastic engine cover panel (if present in the engine bay) using a screwdriver. Disconnect the power connector from the lambda sensor, then unscrew the sensor using a suitable spanner and remove it. Once you have extracted the sensor from its housing, compare it with the new part. Install the new sensor using the spanner and reconnect the power connector. Finally, refit the soundproofing engine cover.

Updated on 5 March 2026 by ScegliAuto

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