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Home » Toyota » YARIS 1.0 ENGINE CODE 1SZ-FE EM lighy illuminated

iQ, Aygo, Yaris, Verso, Auris, Avensis, GT86, Prius, RAV4, Land Cruiser, Hilux and all things Toyota!
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21/03/2013

IGAAdmin
IGAAdmin
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Driver Complaint – Engine Management Light illuminated with no performance issues.

Cause/Symptom – Fault code P0240 stored in the system memory-Catalyst efficiency below threshold. The emissions were out of specification for the vehicle to pass the MOT test limits.

Rectification Route – Advice from the vehicle manufacturers was to get the engine up to operating temperature and check that the rear sensor is switching at 4000 rpm. It was advised that it should switch between 0.04v 0.05v, if not suspect the catalytic convertor to be at fault. In this instance the catalyst was replaced and the fault was illuminated from the system and the readings were back within specification.
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Home » Toyota » YARIS 1.0 ENGINE CODE 1SZ-FE EM lighy illuminated